| MIYAMOTO Hiroyuki |  |
| Faculty of Science and Engineering Department of Mechanical and Systems Engineering | |
| Professor |
Last Updated :2025/05/20
Researcher Profile and Settings
researchmap
Research Interests
- electrodeposition
- severe plastic deformation
- 応力腐食割れ
- 粒界現象
- 超塑性
- ultrafine grain structure
- 結晶粒界
- stress corrosion cracking
- grain boundary phenomena
- superplasticity
- fine-grained structure
- grain boundary
Research Areas
Research Experience
- Doshisha University, Faculty of Science and Engineering Department of Mechanical and Systems Engineering, 2008/04 - Today
- Doshisha University, 2002/04 - 2008/03
- Doshisha University, 2000 - 2002
- Doshisha University, 1997 - 2000
- 住友金属工業株式会社 総合技術研究所, 1992 - 1997
Education
- Doshisha University, 工学研究科, 機械工学専攻, - 1992
- Doshisha University, Graduate School, Division of Engineering, - 1992
- Doshisha University, 工学部, 機械工学科, - 1989
- Doshisha University, Faculty of Engineering, - 1989
Degree
Association Memberships
- The Japan Society of Mechanical Engineers
- Iron and Steel Institute of Japan
- Japan Institute of Metals
- Society of Materials Science Japan
- Japan Society for Technology of Plasticity
Committee Memberships
- 会誌・欧文誌編集委員, 2022/04 - Today, 日本金属学会, Society
- 理事, 2011/04 - Today, 一般社団法人日本国際学生技術研修協会 (イアエステ）, Others
- 代議員, 2021/04 - 2022/03, 日本機械学会, Society
- 理事, 2020/04 - 2022/03, 日本塑性加工学会, Society
- 代議員, 2019/04 - 2021/03, 日本材料学会, Society
- 庶務幹事, 2017/04 - 2020/03, 日本塑性加工学会 関西支部, Society
- 会誌・欧文誌編集委員, 2010/04 - 2014/03, 日本金属学会, Society
- 幹事, 2010/04 - 2012/03, 日本機械学会 関西支部, Society
- 幹事, 2008/04 - 2010/03, 日本材料学会 関西支部, Society
- 関西支部幹事, 2004/04 - 2008/03, 日本塑性加工学会, Society, 日本塑性加工学会
Awards
- Best Paper Awards
Dec. 2024, Journal of alloys and compounds, severe plastic deformation for producing superfunctional ultrafine-grained and heterostructured materials: An interdisciplinary review - 論文賞
Oct. 2021, 日本銅学会 - 支部長賞
Mar. 2011, 日本材料学会 関西支部 - 金属組織写真奨励賞
Mar. 2007, 日本金属学会
Published Papers
- Influence of different wrought processes on the microstructure and texture evolution in AZ31 magnesium alloy
Hiromasa Yoshizumi; Motohiro Yuasa; Hiroyuki Miyamoto; Hidetoshi Somekawa
Materials Characterization, Elsevier BV, 217 114446 - 114446, Nov. 2024, Scientific journal - Comparison of Linear and Nonlinear Twist Extrusion Processes with Crystal Plasticity Finite Element Analysis
Ü. Şimşek; K. Davu; H. Miyamoto; T. Yalçinkaya
Materials, 17(5) 1139 , Oct. 2024, Scientific journal - Influence of grain refinement via high-pressure torsion on corrosion behavior of medium- and high-entropy alloys CoCrFeNi and CoCrFeMnNi with various chromium contents
N. Hata; M. Yuasa; H. Miyamoto; K. Edalati
Journal of Materials Science, Mar. 2024 - Effect of pre-rolling aging treatment on evolutions of the microstructure and the texture of aluminium alloy 7005 subjected to heavy cold rolling
Mohammad Hassan Farshidi; Hiroyuki Miyamoto; Haruka Ito
Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, International Union of Crystallography (IUCr), 79(5) 408 - 413, 13 Sep. 2023, Scientific journal - Microstructure Evolution and Local Hardness of Mg–Y–Zn Alloys Processed by ECAE
Motohiro Yuasa; Ryoichi Sato; Takao Hoshino; Daisuke Ando; Yoshikazu Todaka; Hiroyuki Miyamoto; Hidetoshi Somekawa
MATERIALS TRANSACTIONS, Japan Institute of Metals, 64(4) 730 - 734, 2023, Scientific journal - Manufacturing of high strength thin-walled aluminum 6063 tubes through severe plastic deformation combined with peak-aging treatment
R Emamidoustabad; MH Farshidi; H Miyamoto; H Ito
Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, SAGE Publications, 237(9) 1436 - 1445, 04 Nov. 2022, Scientific journal - Nanomaterials by severe plastic deformation: review of historical developments and recent advances
Kaveh Edalati; Andrea Bachmaier; Victor A. Beloshenko; Yan Beygelzimer; Vladimir D. Blank; Walter J. Botta; Krzysztof Bryła; Jakub Čížek; Sergiy Divinski; Nariman A. Enikeev; Yuri Estrin; Ghader Faraji; Roberto B. Figueiredo; Masayoshi Fuji; Tadahiko Furuta; Thierry Grosdidier; Jenő Gubicza; Anton Hohenwarter; Zenji Horita; Jacques Huot; Yoshifumi Ikoma; Miloš Janeček; Megumi Kawasaki; Petr Král; Shigeru Kuramoto; Terence G. Langdon; Daniel R. Leiva; Valery I. Levitas; Andrey Mazilkin; Masaki Mito; Hiroyuki Miyamoto; Terukazu Nishizaki; Reinhard Pippan; Vladimir V. Popov; Elena N. Popova; Gencaga Purcek; Oliver Renk; Ádám Révész; Xavier Sauvage; Vaclav Sklenicka; Werner Skrotzki; Boris B. Straumal; Satyam Suwas; Laszlo S. Toth; Nobuhiro Tsuji; Ruslan Z. Valiev; Gerhard Wilde; Michael J. Zehetbauer; Xinkun Zhu
Materials Research Letters, Informa UK Limited, 10(4) 163 - 256, 17 Feb. 2022, Scientific journal - Corrosion Behavior of Ultrafine‐Grained CoCrFeMnNi High‐Entropy Alloys Fabricated by High‐Pressure Torsion
Haruka Shimizu; Motohiro Yuasa; Hiroyuki Miyamoto; Kaveh Edalati
Materials, 15(3), 01 Feb. 2022, Scientific journal - Effect of Homogenization on Microstructure and Hardness of Arc-Melted FeCoNiMn High Entropy Alloy During High-Pressure Torsion (HPT)
Fatemeh Alijani; Mohsen Reihanian; Khalil Gheisari; Kaveh Edalati; Hiroyuki Miyamoto
Journal of Materials Engineering and Performance, Springer Science and Business Media LLC, 31(6) 5080 - 5089, 17 Jan. 2022, Scientific journal - Effect of solute Mn on microstructural evolution of Cu–Mn alloys processed by equal channel angular pressing
Mayu Asano; Motohiro Yuasa; Hiroyuki Miyamoto
Journal of Materials Research, Springer Nature, 36(14) 2890 - 2902, 28 Jul. 2021, Scientific journal - Quantitative kink boundaries strengthening effect of Mg-Y-Zn alloy containing LPSO phase
Yuto Nakasuji; Hidetoshi Somekawa; Motohiro Yuasa; Hiroyuki Miyamoto; Michiaki Yamasaki; Yoshihito Kawamura
Materials Letters, Elsevier BV, 292 129625 - 129625, Jun. 2021, Scientific journal - Effects of stacking fault energy and solute atoms on microstructural evolution of Cu, Ag and Cu–Al alloys processed by equal channel angular pressing
Mayu Asano; Motohiro Yuasa; Hiroyuki Miyamoto
Materials Science and Engineering A, 803, 28 Jan. 2021, Scientific journal - Microstructure and strain rate sensitivity in pure magnesium subjected to severe plastic deformation
M. Rifai; Mujamilah; H. Miyamoto
PROCEEDINGS OF INTERNATIONAL CONFERENCE ON NUCLEAR SCIENCE, TECHNOLOGY, AND APPLICATION 2020 (ICONSTA 2020), AIP Publishing, 2021, International conference proceedings - Effect of stacking fault energy and solute atoms on microstructural evolutions of FCC metals processed by severe plastic deformation
Mayu Asano; Motohiro Yuasa; Hiroyuki Miyamoto
Materials Science Forum, 1016 MSF 1229 - 1234, 2021, International conference proceedings - Microstructure and high-temperature deformation behavior of FeCoNiMnV high entropy alloy
F. Alijani; M. Reihanian; Kh Gheisari; H. Miyamoto
Materials Chemistry and Physics, 256, 01 Dec. 2020, Scientific journal - Potential of high compressive ductility of ultrafine grained copper fabricated by severe plastic deformation
Mayu Asano; Motohiro Yuasa; Hiroyuki Miyamoto; Tatsuya Tanaka; Can Erdogan; Tuncay Yalçinkaya
Metals, MDPI AG, 10(11) 1 - 12, 01 Nov. 2020, Scientific journal - Observation of low temperature superplasticity in an ultrafine grained AA6063 alloy
H. R. Jafarian; S. H. Mousavi Anijdan; H. Miyamoto
Materials Science and Engineering A, 795, 23 Sep. 2020, Scientific journal - Hot compression deformation behavior of Mg–Y–Zn alloys containing LPSO phase
Hidetoshi Somekawa; Yuto Nakasuji; Motohiro Yuasa; Hiroyuki Miyamoto; Michiaki Yamasaki; Yoshihito Kawamura
Materials Science and Engineering A, 792, 05 Aug. 2020, Scientific journal - Fabrication of dense ZrB
2 /B4 C composites using pulsed electric current pressure sintering and evaluation of their high-temperature bending strength
Tung Duy Le; Ken Hirota; Masaki Kato; Hiroyuki Miyamoto; Motohiro Yuasa; Toshiyuki Nishimura
Ceramics International, 46(11) 18478 - 18486, 01 Aug. 2020, Scientific journal - Microstructural Characterization of Mechanically Alloyed FeCoNiMnV High Entropy Alloy Consolidated by Spark Plasma Sintering
Fatemeh Alijani; Mohsen Reihanian; Khalil Gheisari; Motohiro Yuasa; Hiroyuki Miyamoto
Advanced Engineering Materials, 22(4), Apr. 2020, Scientific journal - Tailoring microstructure and mechanical properties of nano/ultrafine grained AA6063 alloy processed by accumulative roll bonding process
H. R. Jafarian; H. Miyamoto
Iranian Journal of Materials Science and Engineering, 17(1) 1 - 10, Mar. 2020, Scientific journal - Effect of thermomechanical processing on grain size, texture and mechanical properties of pure magnesium
Mouhamadou Moustapha Sarr; Motohiro Yuasa; Hiroyuki Miyamoto
Materials Science Forum, 985 MSF 97 - 108, 2020, International conference proceedings - On the Production of Severely Deformed Workpieces in Large Scales: A Step Towards Industrialization
E. Bagherpour; S. Mortezaei; R. Ebrahimi; H. Miyamoto; F. Qods
JOM, 71(12) 4424 - 4435, 01 Dec. 2019, Scientific journal - Numerical analysis of a new nonlinear twist extrusion process
Tuncay Yalçinkaya; Ülke Şimşek; Hiroyuki Miyamoto; Motohiro Yuasa
Metals, 9(5), May 2019, Scientific journal - Texture evolution of a dilute aluminum alloy subjected to tube channel pressing
M. H. Farshidi; H. Miyamoto
Materials Research Express, 6(2), Feb. 2019, Scientific journal - Improvement of the Mechanical Properties of Magnesium Alloy AZ31 Using Non-linear Twist Extrusion (NTE)
Nathaniel Mupe; Hiroyuki Miyamoto; Motohiro Yuasa
Procedia Structural Integrity, 21 73 - 82, 2019, International conference proceedings - Improving Hydro-formability of a Ferritic Stainless Steel Tube Through Severe Plastic Deformation
M. H. Farshidi; Y. Kitano; M. Yuasa; H. Miyamoto
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 49(12) 6052 - 6062, 01 Dec. 2018, Scientific journal - Electrodeposition of nanocrystalline nickel embedded with inert nanoparticles formed via inverse hydrolysis
Febe Merita; Daisuke Umemoto; Motohiro Yuasa; Hiroyuki Miyamoto; Takuya Goto
Applied Surface Science, 458 612 - 618, 15 Nov. 2018, Scientific journal - Fabrication of Al/AlN in-situ nanocomposite through planetary ball milling and hot extrusion of Al/BN: Microstructural evaluation and mechanical behavior
Reza Gostariani; Ebad Bagherpour; Muhammad Rifai; Ramin Ebrahimi; Hiroyuki Miyamoto
Journal of Alloys and Compounds, 768 329 - 339, 05 Nov. 2018, Scientific journal - Microstructure evolution of a recycled Al–Fe–Si–Cu alloy processed by tube channel pressing
M. H. Farshidi; M. Rifai; H. Miyamoto
International Journal of Minerals, Metallurgy and Materials, 25(10) 1166 - 1172, 01 Oct. 2018, Scientific journal - Microstructure and texture inhomogeneity after large non-monotonic simple shear strains: Achievements of tensile properties
Ebad Bagherpour; Fathallah Qods; Ramin Ebrahimi; Hiroyuki Miyamoto
Metals, 8(8), Aug. 2018, Scientific journal - Enhanced corrosion resistance of ultrafine-grained fe-cr alloys with subcritical cr contents for passivity
Muhammad Rifai; Motohiro Yuasa; Hiroyuki Miyamoto
Metals, 8(3), Mar. 2018, Scientific journal - Strain reversal in simple shear extrusion (SSE) processing: Microstructure investigations and mechanical properties
Ebad Bagherpour; Fathallah Qods; Ramin Ebrahimi; Hiroyuki Miyamoto
AIP Conference Proceedings, 1920, 10 Jan. 2018, International conference proceedings - Transition of Dislocation Structures in Severe Plastic Deformation and Its Effect on Dissolution in Dislocation Etchant
Muhammad Rifai; Ebad Bagherpour; Genki Yamamoto; Motohiro Yuasa; Hiroyuki Miyamoto
Advances in Materials Science and Engineering, 2018, 2018, Scientific journal - Recrystallization behavior and texture of high-purity niobium for SRF cavity
Yuta Yamaguchi; Takumi Izumi; Motohiro Yuasa; Hiroyuki Miyamoto; Masashi Yamanaka
Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, 82(7) 262 - 268, 2018, Scientific journal - Thermal and mechanical properties of harmonic-structured composite with copper and molybdenum
Hiroshi Fujiwara; Koki Sone; Fuminori Ueguchi; Hiroyuki Miyamoto
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, 65(8) 465 - 469, 2018, Scientific journal - Effect of Deformation Structure and Annealing Temperature on Corrosion of Ultrafine-Grain Fe-Cr Alloy Prepared by Equal Channel Angular Pressing
Muhammad Rifai; Motohiro Yuasa; Hiroyuki Miyamoto
International Journal of Corrosion, 2018, 2018, Scientific journal - Grain refinement of pure magnesium using nonlinear twist extrusion
Muhammad Lutfi Maulidi; Hiroyuki Miyamoto; Motohiro Yuasa
Materials Science Forum, 939 MSF 54 - 62, 2018, International conference proceedings - Effect of Initial Grain Size Prior to ECAP-Cold Rolling Processing on the Riding and Form-ability of Ferritic Stainless Sheets
Mitsuaki Adachi; Motohiro Yuasa; Hiroyuki Miyamoto; Hiroshi Fujiwara; Masaharu Hatano
Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, 公益社団法人 日本金属学会, 82(2) 52 - 57, 2018, Scientific journal - Improving hydro-formability of stainless steel tubes by tube channel pressing
Y. Kitano; M. Yuasa; H. Miyamoto; M. H. Farshidi; E. Bagherpour
IOP Conference Series: Materials Science and Engineering, 194(1), 08 May 2017, International conference proceedings - Deformation and recrystallization behavior of super high-purity niobium for SRF cavity
Y. Yamaguchi; H. Doryo; M. Yuasa; H. Miyamoto; M. Yamanaka
IOP Conference Series: Materials Science and Engineering, 194(1), 08 May 2017, International conference proceedings - Tailoring particle distribution non-uniformity and grain refinement in nanostructured metal matrix composites fabricated by severe plastic deformation (SPD): a correlation with flow stress
E. Bagherpour; M. Reihanian; H. Miyamoto
Journal of Materials Science, 52(6) 3436 - 3446, 01 Mar. 2017, Scientific journal - Nanostructured pure copper fabricated by simple shear extrusion (SSE): A correlation between microstructure and tensile properties
E. Bagherpour; F. Qods; R. Ebrahimi; H. Miyamoto
Materials Science and Engineering A, 679 465 - 475, 02 Jan. 2017, Scientific journal - Effect of Grain Size on the Stress Corrosion Cracking of Ultrafine Grained Cu-10 wt% Zn Alloy in Ammonia
Takuma Asabe; Muhammad Rifai; Motohiro Yuasa; Hiroyuki Miyamoto
International Journal of Corrosion, 2017, 2017, Scientific journal - Microstructure quantification of ultrafine grained pure copper fabricated by simple shear extrusion (SSE) technique
E. Bagherpour; F. Qods; R. Ebrahimi; H. Miyamoto
Materials Science and Engineering A, 674 221 - 231, 30 Sep. 2016, Scientific journal - Microstructure evolution of pure copper during a single pass of simple shear extrusion (SSE): Role of shear reversal
E. Bagherpour; F. Qods; R. Ebrahimi; H. Miyamoto
Materials Science and Engineering A, 666 324 - 338, 01 Jun. 2016, Scientific journal - Nanocrystalline nickel dispersed with hydrolyzed nano-size tungsten oxide particles by electrodeposition
Tomoki Mifune; Yushi Kato; Hiroyuki Miyamoto; Hiroshi Fujiwara; Takuya Goto
Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, 80(2) 109 - 113, 2016, Scientific journal - Nanoparticle formation in magnesium based composite by Mg/Al
2 O3 interfacial reaction
Hiroshi Fujiwara; Yusuke Nishimine; Shigehiro Kawamori; Hiroyuki Miyamoto
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, 63(7) 555 - 558, 2016, Scientific journal - Texture changes during simple shear extrusion (SSE) processing of pure copper
E. Bagherpour; F. Qods; R. Ebrahimi; H. Miyamoto
Materials Transactions, 57(9) 1386 - 1391, 2016, Scientific journal - Microstructure and mechanical properties of harmonic-structured Al-Cu alloy
Hiroshi Fujiwara; Tomoki Takata; Hiroyuki Miyamoto
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, 63(7) 675 - 678, 2016, Scientific journal - Corrosion of ultrafine grained materials by severe plastic deformation, an overview
Hiroyuki Miyamoto
Materials Transactions, 57(5) 559 - 572, 2016, Scientific journal - Microstructure and mechanical properties of an Al-Mg-Si tube processed by severe plastic deformation and subsequent annealing
M. H. Farshidi; M. Kazeminezhad; H. Miyamoto
Materials Science and Engineering A, 640 42 - 50, 09 Jul. 2015, Scientific journal - Extrusion sintering of harmonic-structured composite with Ti-48 mol%Al alloy and pure titanium by SPS process
Hiroshi Fujiwara; Reo Yoshida; Tatsuro Tsuda; Hiroyuki Miyamoto
Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, 79(7) 372 - 375, 01 Jul. 2015, Scientific journal - Wear property of harmonic-structured material with high speed steel and mild steel produced by MM/SPS process
Hiroshi Fujiwara; Yuki Tsuzuki; Hiroyuki Miyamoto
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, 62(6) 302 - 307, 01 Jun. 2015, Scientific journal - Extraordinary diffusion in Co/Cu grain boundaries
Hiromi Nakano; Motohiro Yuasa; Hiroyuki Miyamoto; Naoki Miyazawa; Mamoru Mabuchi
Scripta Materialia, 101 52 - 55, 01 May 2015, Scientific journal - Effects of strain energy and grain size on corrosion resistance of ultrafine grained Fe-20%Cr steels with extremely low c and n fabricated by ECAP
Muhammad Rifai; Hiroyuki Miyamoto; Hiroshi Fujiwara
International Journal of Corrosion, 2015, 06 Jan. 2015, Scientific journal - Effect of one-pass ECAP prior to cold rolling on the deformation structure and recrystallizationin ferritic stainless steel sheets
Hiroshi Fujiwara; Mitsuaki Adachi; Hiroyuki Miyamoto; Masaharu Hatano
Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, 一般社団法人 日本鉄鋼協会, 101(11) 619 - 625, 2015, Scientific journal - Microstructure and mechanical properties of harmonic-structured Cu-Sn alloy
Hiroshi Fujiwara; Takashi Nishimoto; Hiroyuki Miyamoto; Kei Ameyama
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, 61(11) 521 - 525, 01 Nov. 2014, Scientific journal - Deformation mechanism of harmonic-structured composite with high speed steel and mild steel by MM/SPS process
Hiroshi Fujiwara; Yuki Tsuzuki; Hiroyuki Miyamoto; Kei Ameyama
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, 61(11) 526 - 530, 01 Nov. 2014, Scientific journal - Microstructrual evolution of aluminum 6061 alloy through tube channel pressing
M. H. Farshidi; M. Kazeminezhad; H. Miyamoto
Materials Science and Engineering A, 615 139 - 147, 06 Oct. 2014, Scientific journal - Microstructure and mechanical properties of TiAl
3 /Al2 O3 in situ composite by combustion process
Hiroshi Fujiwara; Duc Huy Tran; Reo Yoshida; Thanh Binh Do; Hiroyuki Miyamoto
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, 61(9) 437 - 440, 01 Sep. 2014, Scientific journal - Age-hardening mechanism for nanocrystalline Ni-P alloys synthesized by electrodeposition
Yosuke Kasazaki; Hiroshi Fujiwara; Hiroyuki Miyamoto
Surface and Coatings Technology, 253 154 - 160, 25 Aug. 2014, Scientific journal - Effect of ECAP Deformation Route on the Degree of Anisotropy of Microstructure of Extremely Low CN Fe-20mass% Cr Alloy
Muhammad Rifai; Hiroyuki Miyamoto; Hiroshi Fujiwara
METALS, MDPI AG, 4(1) 55 - 63, Mar. 2014, Scientific journal - Severe plastic deformation as a new processing for enhancing the performance of metallic components
Hiroyuki Miyamoto; Rifai Muhammad; Hiroshi Fujiwara
CONSTRUCTION MATERIALS AND STRUCTURES, IOS PRESS, 35 - 46, 2014, International conference proceedings - Aging behavior of ECAP processed AZ80 Mg alloy
Yoshifumi Ogushi; Ehsan Mostaed; David Dellasega; Maurizio Vedani; Hiroyuki Miyamoto; Hiroshi Fujiwara
IOP Conference Series: Materials Science and Engineering, 63(1), 2014, International conference proceedings - Microstructure and mechanical properties of TiAl
3 /Al2 O3 in situ composite by combustion process
Tran Duc Huy; Hiroshi Fujiwara; Reo Yoshida; Do Thanh Binh; Hiroyuki Miyamoto
Materials Transactions, 55(7) 1091 - 1093, 2014, Scientific journal - Annealing effect on mechanical properties of Ti-Al alloy/pure Ti harmonic-structured composite by MM/SPS process
R. Yoshida; T. Tsuda; H. Fujiwara; H. Miyamoto; K. Ameyama
IOP Conference Series: Materials Science and Engineering, 63(1), 2014, International conference proceedings - Deformation behavior of high speed steel/low Carbon steel composite with harmonic structure by MM/SPS process
Y. Tsuzuki; H. Fujiwara; H. Miyamoto; K. Ameyama
IOP Conference Series: Materials Science and Engineering, 63(1), 2014, International conference proceedings - Effect of microstructure on the mechanical properties of Magnesium composites containing dispersed alumina particles by MM/SPS process
Hiroshi Fujiwara; Suguru Hamanaka; Shigehiro Kawamori; Hiroyuki Miyamoto
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, 61(8) 397 - 402, 2014, Scientific journal - The age-hardening mechanism of nanocrystalline Ni-P alloys synthesized by electrodeposition
Yosuke Kasazaki; Hiroyuki Miyamoto; Hiroshi Fujiwara
Advanced Materials Research, 922 338 - 343, 2014, International conference proceedings - Effect of the channel angle of one-pass ECAP prior to cold rolling on the microstructure and texture of metallic sheets
Hiroyuki Miyamoto; Masashi Ueda; Hiroshi Fujiwara
Materials Science Forum, 783-786 2591 - 2596, 2014, International conference proceedings - Effect of deformation route on the development of low CN Fe-20%Cr alloy by equal channel angular pressing
Muhammad Rifai; Hiroyuki Miyamoto; Hiroshi Fujiwara
IOP Conference Series: Materials Science and Engineering, 63(1), 2014, International conference proceedings - Effect of microstructure on the mechanical properties of magnesium composites containing dispersed alumina particles prepared using an MM/SPS process
Hiroshi Fujiwara; Suguru Hamanaka; Shigehiro Kawamori; Hiroyuki Miyamoto
Materials Transactions, 55(3) 543 - 548, 2014, Scientific journal - Effect of heat treatment on microstructure and mechanical properties of harmonic-structuredcomposite with pure titanium and Ti-48mol%AI Alloy
Hiroshi Fujiwara; Reo Yoshida; Hiroyuki Miyamoto; Kei Ameyama
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, 60(10) 413 - 419, Dec. 2013, Scientific journal - "Special" to "general" transition of intergranular corrosion in σ3{111} grain boundary with gradually changed misorientation
Yuhei Takehara; Hiroshi Fujiwara; Hiroyuki Miyamoto
Corrosion Science, 77 171 - 175, Dec. 2013, Scientific journal - The age hardening mechanism of nanocrystalline Ni-P alloys synthesized by electrodeposition
Inatsu Kobayashi; Toshiyuki Uenoya; Hiroshi Fujiwara; Hiroyuki Miyamoto
Zairyo/Journal of the Society of Materials Science, Japan, 62(11) 710 - 716, Nov. 2013, Scientific journal - Mechanical properties of harmonic structured composite with pure titanium and Ti-48 mol%Al alloy by MM/SPS process
Hiroshi Fujiwara; Takeshi Kawabata; Hiroyuki Miyamoto; Kei Ameyama
Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, 77(11) 509 - 513, Nov. 2013, Scientific journal - On the natural aging behavior of Aluminum 6061 alloy after severe plastic deformation
M. H. Farshidi; M. Kazeminezhad; H. Miyamoto
Materials Science and Engineering A, 580 202 - 208, 05 Sep. 2013, Scientific journal - Misorientation change of the grain boundary in pure copper bicrystals subjected to one-pass equal-channel angular pressing
Yohei Wadamori; Kentoku Hirayama; Hiroshi Fujiwara; Toshiyuki Uenoya; Hiroyuki Miyamoto
Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, 77(9) 348 - 352, Sep. 2013, Scientific journal - Intergranular corrosion of Σ9 copper bicrystal with gradually changed misorientation in young's dislocation etchant
Yuhei Takehara; Hiroshi Fujiwara; Hiroyuki Miyamoto
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 44(8) 3685 - 3689, Aug. 2013, Scientific journal - Microstructure and mechanical properties of high speed steel/carbon steel composite with harmonic structure
Yusuke Yamada; Hiroshi Fujiwara; Hiroyuki Miyamoto; Kei Ameyama
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, 60(4) 160 - 166, Apr. 2013, Scientific journal - Severe plastic deformation of 6061 aluminum alloy tube with pre and post heat treatments
M. H. Farshidi; M. Kazeminezhad; H. Miyamoto
Materials Science and Engineering A, 563 60 - 67, 15 Feb. 2013, Scientific journal - Microstructure quantification and mechanical properties of ultrafine grained Fe-Cr alloys and pure copper by equal channel angular pressing
Muhammad Rifai; Ryosuke Haga; Hiroyuki Miyamoto; Hiroshi Fujiwara
8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8, 4 3329 - 3335, 2013, International conference proceedings - Microstructure and mechanical properties of Cu-Sn alloy with harmonic structure
Hiroshi Fujiwara; Takashi Nishimoto; Hiroyuki Miyamoto; Kei Ameyama
8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8, 3 2455 - 2460, 2013, International conference proceedings - Effect of grain boundary structure on misorientation change of pure copper bicrystals pressed by one-pass equal-channel angular pressing
Kentoku Hirayama; Kazuki Nagai; Hiroshi Fujiwara; Hiroyuki Miyamoto
Materials Transactions, 54(7) 1077 - 1082, 2013, Scientific journal - Mechanical properties of harmonic structured composite with pure titanium and Ti-48 at%al alloy by MM/SPS Process
Hiroshi Fujiwara; Takeshi Kawabata; Hiroyuki Miyamoto; Kei Ameyama
Materials Transactions, 54(9) 1619 - 1623, 2013, Scientific journal - The age-hardening mechanism of nanocrystalline Ni-P alloys synthesized by electrodeposition
Natsu Kobayashi; Toshiyuki Uenoya; Hiroshi Fujiwara; Hiroyuki Miyamoto
Zairyo/Journal of the Society of Materials Science, Japan, 61(11) 912 - 918, Nov. 2012, Scientific journal - Nanocrystalline nickel dispersed with nano-size WO
3 particles synthesized by electrodeposition
H. Miyamoto; S. Takehara; T. Uenoya; H. Fujiwara; T. Goto
Journal of Materials Science, 47(12) 4798 - 4804, Jun. 2012, Scientific journal - Thermoelastic characterization and quantitative evaluation of fatigue induced damages in carbon fiber/NY6 composites
Toshiyuki Uenoya; Ryuta Suzuki; Hiroyuki Miyamoto
Zairyo/Journal of the Society of Materials Science, Japan, 61(5) 447 - 453, May 2012, Scientific journal - Facilitated recrystalization of the hard-to-recrystalize structure in 16% Cr steel sheets by one-pass ECAP prior to cold rolling
Hiroyuki Miyamoto; Tong Xiao; Toshiyuki Uenoya
Materials Science Forum, 702-703 607 - 610, 2012, International conference proceedings - Impact damage characterization in cross-plied carbon fiber/thermoplastic composites using thermoelastic stress analysis
T. Yoshida; T. Uenoya; H. Miyamoto
Proceedings of SPIE - The International Society for Optical Engineering, 8347, 2012, International conference proceedings - Electrodeposited nanocrystalline nickel dispersed with Nano-Size WO
3 particles
Hiroyuki Miyamoto; Shota Takehara; Toshiyuki Uenoya; Hiroshi Fujiwara; Takuya Goto
Materials Transactions, 53(5) 1026 - 1028, 2012, International conference proceedings - Misorientation change of the grain boundary in pure copper bicrystals subjected to one-pass equal-channel angular pressing
Yohei Wadamori; Kentoku Hirayama; Hiroshi Fujiwara; Toshiyuki Uenoya; Hiroyuki Miyamoto
Materials Transactions, 53(11) 1858 - 1862, 2012, Scientific journal - Combined Processing of ECAP and Cold Rolling to Enhance the Performance of Metallic Materials
Hiroyuki Miyamoto; Tong Xiao; Toshiyuki Uenoya
Supplemental Proceedings: General Paper Selections, 3 867 - 872, 03 May 2011, In book - Characterization of fatigue damage of orthotropic CF/NY6 laminates through thermoelastic stress analysis
Ryuta Suzuki; Toshiyuki Uenoya; Hiroyuki Miyamoto
7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010, 1 662 - 665, 2010, International conference proceedings - Susceptibility to stress corrosion cracking in ammonia of nanostructured Cu-10wt%Zn alloy produced by severe plastic deformation
Hiroyuki Miyamoto; Alexei Vinogradov; Satoshi Hashimoto
Materials Science Forum, 584-586 PART 2 887 - 892, 2008, International conference proceedings - Application of ECAP for ferritic stainless steel sheets to control texture and alleviate ridging
Hiroyuki Miyamoto; Noriyuki Jinbo; Masaharu Hatano; Takuro Mimaki
TMS Annual Meeting, 1 187 - 192, 2008, International conference proceedings - Intergranular corrosion of ultrafine grain copper fabricated by ECAP
H. Miyamoto; T. Mimaki; A. Vinogradov; S. Hashimoto
Materials Science Forum, 561-565(PART 3) 2385 - 2388, 2007, International conference proceedings - Stress corrosion cracks propagation in ultra-fine grain copper fabricated by an equal-channel angular pressing
Hiroyuki Miyamoto; Toshihiko Kishi; Takuro Mimaki; Alexei Vinogradov; Satoshi Hashimoto
TMS Annual Meeting, 2006 337 - 342, 2006, International conference proceedings - Interphase boundary sliding of two-phase (α/β), (β/γ), and (γ/α) CuZnSn alloy couples produced by solid-to-solid diffusion bonding
H. Miyamoto; T. Tanaka; T. Mimaki; R. Matsubara; N. Ashie; S. Miura
Materials Science and Engineering A, 380(1) 34 - 40, 25 Aug. 2004, Scientific journal - Impact properites of ultra fine graied aluminum produced by equla channel angular pressing
H. Miyamoto; T. Otsuka; T. Mimaki
Ultrafine Grained Materials III, 577 - 581, 2004, International conference proceedings - Impact properites of ultra-fine grain aluminum produced by equal channel angular pressing
H. Miyamoto; T. Otsuka; T. Mimaki
Ultrafine Grained Materials III, 559 - 563, 2004, International conference proceedings - Secondary flow and flow characteristics based on the blade tip leakage of a centrifugal impeller
Hiroyuki Miyamoto; Hideki Ohba
Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 69(680) 876 - 880, Apr. 2003, Scientific journal - A Study about Impact Strength of Ultra Fine-Grained Aluminum
OTSUKA Tomonori; MIYAMOTO Hiroyuki; MIMAKI Takuro
Proceedings of the 1992 Annual Meeting of JSME/MMD, The Japan Society of Mechanical Engineers, 2003 69 - 70, 2003 - Corrosion fatigue of ultra-fine grain copper fabricated by severe plastic deformation
T. Yamasaki; H. Miyamoto; T. Mimaki; A. Vinogradov; S. Hashimoto
TMS Annual Meeting, 361 - 370, 2002, International conference proceedings - An analysis of flow in a centrifugal impeller by FEM with k-ε model
Satoshi Matsumoto; Hideki Ohba; Hiroyuki Miyamoto
Journal of Thermal Science, 10(1) 7 - 13, 2001, Scientific journal - Effects of flow rate on turbulent flow characteristics at mid-passage of a shrouded centrifugal impeller
Hiroyuki Miyamoto; Satoshi Matsumoto; Satoshi Kitagawa; Hideki Ohba
Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 66(645) 1384 - 1389, May 2000, Scientific journal - Effects of flow rate on turbulent flow characteristics at mid-passage of an unshrouded centrifugal impeller
Hiroyuki Miyamoto; Satoshi Matsumoto; Satoshi Kitagawa; Hideki Ohba
Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 66(642) 468 - 474, Feb. 2000, Scientific journal - Measurement of swirling flow in a rectangular channel
K. Matsuzaki; Y. Cheng; H. Miyamoto; H. Ohba; M. Munekata
Proceedings of the 1999 3rd ASME/JSME Joint Fluids Engineering Conference, FEDSM'99, San Francisco, California, USA, 18-23 July 1999 (CD-ROM), 1 , 1999, Scientific journal - Measurements of the Reynolds stresses at mid-passages of the unshrouded and shrouded centrifugal impellers
H. Miyamoto; S. Matsumoto; H. Ohba
Proceedings of the 1999 3rd ASME/JSME Joint Fluids Engineering Conference, FEDSM'99, San Francisco, California, USA, 18-23 July 1999 (CD-ROM), 1 , 1999, Scientific journal - An Experimental Study for Simulation of Pneumatic Conveying (2nd Report, Lift and Drag Applied on a Sphere in High Reynolds Number Linear Shear Flows)
Fujio Yamamoto; Mitsuo Koukawa; Hideki Monya; Atsushi Teranishi; Hiroyuki Miyamoto
Transactions of the Japan Society of Mechanical Engineers Series B, 57(542) 3414 - 3419, 1991, Scientific journal - Effects of Splitter Blades on Centrifugal Impellers: (2nd, The Change of the Impeller Characteristics)
Hiroyuki Miyamoto; Yukitoshi Nakashima; Hideki Ohba
Transactions of the Japan Society of Mechanical Engineers Series B, 57(533) 160 - 165, 1991, Scientific journal - Effects of Splitter Blades on Centrifugal Impellers: (1st Report, The Change of Flow Pattern in the Impeller Passage)
Hiroyuki Miyamoto; Yukitoshi Nakashima; Hideki Ohba
Transactions of the Japan Society of Mechanical Engineers Series B, 57(534) 569 - 574, 1991, Scientific journal - Study on Flow of Centrifugal Impeller: 3rd Report, the Effects of Tip Clearance on the Characteristics and Secondary Flow of the Impeller
Hiroyuki Miyamoto; Yukitoshi Nakashima; Kazuaki Shiramoto
Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 56(528) 2416 - 2422, 1990, Scientific journal - Study on Flow of Centrifugal Impeller: (1st Report, Flow Measurement in Unshrouded Impeller Passage)
Hiroyuki Miyamoto; Yukitoshi Nakashima; Yoshihiro Yasunaga; Kazuaki Shiramoto
Transactions of the Japan Society of Mechanical Engineers Series B, 55(512) 1137 - 1141, 1989, Scientific journal - Study on Flow of Centrifugal Impeller: (2nd Report, Flow Measurement in Shrouded Impeller Passage)
Hiroyuki Miyamoto; Yukitoshi Nakashima; Yoshihiro Yasunaga; Kazuaki Shiramoto
Transactions of the Japan Society of Mechanical Engineers Series B, 55(518) 3108 - 3112, 1989, Scientific journal
MISC
- Severe plastic deformation for producing superfunctional ultrafine-grained and heterostructured materials: An interdisciplinary review
Kaveh Edalati; Anwar Q. Ahmed; Saeid Akrami; Kei Ameyama; Valery Aptukov; Rashid N. Asfandiyarov; Maki Ashida; Vasily Astanin; Andrea Bachmaier; Victor Beloshenko; Elena V. Bobruk; Krzysztof Bryła; José María Cabrera; Amanda P. Carvalho; Nguyen Q. Chinh; In Chul Choi; Robert Chulist; Jorge M. Cubero-Sesin; Gregory Davdian; Muhammet Demirtas; Sergiy Divinski; Karsten Durst; Jiri Dvorak; Parisa Edalati; Satoshi Emura; Nariman A. Enikeev; Ghader Faraji; Roberto B. Figueiredo; Ricardo Floriano; Marjan Fouladvind; Daniel Fruchart; Masayoshi Fuji; Hiroshi Fujiwara; Marcell Gajdics; Diana Gheorghe; Lukasz Gondek; Joaquín E. González-Hernández; Alena Gornakova; Thierry Grosdidier; Jenő Gubicza; Dmitry Gunderov; Liqing He; Oscar Fabian Higuera; Shoichi Hirosawa; Anton Hohenwarter; Zenji Horita; Jelena Horky; Yi Huang; Jacques Huot; Yoshifumi Ikoma; Tatsumi Ishihara; Yulia Ivanisenko; Jae il Jang; Alberto M. Jorge; Mie Kawabata-Ota; Megumi Kawasaki; Tarek Khelfa; Junya Kobayashi; Lembit Kommel; Anna Korneva; Petr Kral; Natalia Kudriashova; Shigeru Kuramoto; Terence G. Langdon; Dong Hyun Lee; Valery I. Levitas; Cong Li; Hai Wen Li; Yongtao Li; Zheng Li; Huai Jun Lin; Klaus Dieter Liss; Ying Liu; Diana Maritza Marulanda Cardona; Kenji Matsuda; Andrey Mazilkin; Yoji Mine; Hiroyuki Miyamoto; Suk Chun Moon; Timo Müller; Jairo Alberto Muñoz; Maxim Yu Murashkin; Muhammad Naeem; Marc Novelli; Dániel Olasz; Reinhard Pippan; Vladimir V. Popov; Elena N. Popova; Gencaga Purcek; Patricia de Rango; Oliver Renk; Delphine Retraint; Ádám Révész; Virginie Roche; Pablo Rodriguez-Calvillo; Liliana Romero-Resendiz; Xavier Sauvage; Takahiro Sawaguchi; Hadi Sena; Hamed Shahmir
Journal of Alloys and Compounds, 1002, 15 Oct. 2024, Book review - ECAP加工に供したMg-Y-Zn合金の組織と局所硬さの関係
星野孝男; 湯浅元仁; 湯浅元仁; 安藤大輔; 染川英俊; 宮本博之
日本金属学会講演大会(Web), 168th, 2021 - 塑性加工プロセスがキンク形成に及ぼす影響
湯浅元仁; 湯浅元仁; 染川英俊; 戸高義一; 安藤大輔; 宮本博之
日本金属学会講演大会(Web), 169th, 2021 - Effects of Stacking Fault Energy and Solute Atoms on Microstructures of Ultrafine Grained Copper Alloys Processed by Severe Plastic Deformation
浅野 真由; 湯浅 元仁; 宮本 博之
銅と銅合金 : 銅及び銅合金技術研究会誌 = Copper and copper alloy : journal of Japan Research Institute for Advanced Copper-Base Materials and Technologies, 日本伸銅協会, 60(1) 29 - 34, 2021 - Microstructure and mechanical properties of Mg-Y-Zn alloys processed by Equal-Channel-Angular-Pressing
星野孝男; 湯浅元仁; 湯浅元仁; 安藤大輔; 染川英俊; 宮本博之
軽金属学会大会講演概要, 138th, 2020 - Relationship between strain distribution and hardness of Mg-Y-Zn alloy processed by severe plastic deformation
湯浅元仁; 湯浅元仁; 星野孝男; 中筋悠斗; 中筋悠斗; 安藤大輔; 染川英俊; 宮本博之
軽金属学会大会講演概要, 138th, 2020 - Deformation-kink-bands and mechanical properties of Mg-Y-Zn alloys with LPSO phases processed by ECAP
星野孝男; 湯浅元仁; 湯浅元仁; 安藤大輔; 染川英俊; 宮本博之
軽金属学会大会講演概要, 139th, 2020 - MgY2Zn1合金におけるECAP材の微視的構造と機械特性
星野孝男; 湯浅元仁; 湯浅元仁; 安藤大輔; 染川英俊; 宮本博之
日本金属学会講演大会(Web), 167th, 2020 - Corrosion behavior of severely deformed pure and single-phase materials
Hiroyuki Miyamoto; Motohiro Yuasa; Muhammad Rifai; Hiroshi Fujiwara
Materials Transactions, 60(7) 1243 - 1255, 2019, Book review - Relationship between Stress Corrosion Cracking (SCC) and Grain Size in Ultrafine-Grained Brass
朝部 麿; 阪口 晃司; 湯浅 元仁; 宮本 博之
銅と銅合金 : 銅及び銅合金技術研究会誌 = Copper and copper alloy : journal of Japan Research Institute for Advanced Copper-Base Materials and Technologies, 日本伸銅協会, 56(1) 194 - 199, 2017 - Formation Mechanism of Cracks in Low-cycle Corrosion Fatigue of Metastable Austenitic Stainless Steel
Shirasaki Ryoya; Miyamoto Hiroyuki; Fujiwara Hiroshi
同志社大学ハリス理化学研究報告 = The Harris science review of Doshisha University, Alternative:Harris Science Research Institute of Doshisha University, 57(1) 1 - 6, Apr. 2016 - M324 Fracture Behavior of Belt-Shaped Phosphor Bronze under Cyclic Bending Using Roller
TOGO Kotaro; NAKASIMA Hiroshi; FUJIWARA Hiroshi; MIYAMOTO Hiroyuki
関西支部講演会講演論文集, The Japan Society of Mechanical Engineers, 2016(91) 276 - 276, 11 Mar. 2016 - OS1116 Processing-Route Dependence of Low Cycle Fatigue Properties in ECAPed Ferritic Stainless Steel
TOMITA Ryuji; KANEKO Yoshihisa; VINOGRADOV Alexei; MIYAMOTO Hiroyuki; RIFAI Muhammad
M&M材料力学カンファレンス, The Japan Society of Mechanical Engineers, 2014 "OS1116 - 1"-"OS1116-2", 19 Jul. 2014 - OS1102 Strength and thermal properties of nanocrystalline Ni-WOx by electrodeposition
MIYAMOTO Hiroyuki; KATO Yushi; MIFUNE Tomoki; FUJIWAEA Hiroshi; GOTO Takuya
M&M材料力学カンファレンス, The Japan Society of Mechanical Engineers, 2014 "OS1102 - 1"-"OS1102-3", 19 Jul. 2014 - OS1216 Mechanical Properties and Fracture Mechanism of Harmonic Structure Composite with High Speed Steel and Mild Steel
TSUZUKI Yuki; FUJIWARA Hiroshi; MIYAMOTO Hiroyuki
M&M材料力学カンファレンス, The Japan Society of Mechanical Engineers, 2013 "OS1216 - 1"-"OS1216-3", 12 Oct. 2013 - OS1212 Crack initiation of metastable austenitic stainless steel cyclically deformed in aqueous solution
KAKIUCHI Takuma; MIYAMOTO Hiroyuki; FUJIWARA Hiroshi; MATUMURA Masatoshi
M&M材料力学カンファレンス, The Japan Society of Mechanical Engineers, 2013 "OS1212 - 1"-"OS1212-3", 12 Oct. 2013 - A microstructural aspect of intergranular stress corrosion cracking of semi-hard U-bend tubes of commercially pure copper in cooling systems
H. Miyamoto; D. Saburi; H. Fujiwara
ENGINEERING FAILURE ANALYSIS, PERGAMON-ELSEVIER SCIENCE LTD, 26 108 - 119, Dec. 2012 - A microstructural aspect of intergranular stress corrosion cracking of semi-hard U-bend tubes of commercially pure copper in cooling systems
H. Miyamoto; D. Saburi; H. Fujiwara
Engineering Failure Analysis, PERGAMON-ELSEVIER SCIENCE LTD, 26 108 - 119, Dec. 2012 - OS1308 Influence of Deformation Induced Martensite on the Corrosion Fatigue Life of SUS304 Steels in 3% NaCl solution
Yatsu Takumi; Ono Takafumi; Fujiwara Hiroshi; Miyamoto Hiroyuki; Matsumura Masatoshi
M&M材料力学カンファレンス, The Japan Society of Mechanical Engineers, 2012 "OS1308 - 1"-"OS1308-3", 22 Sep. 2012 - OS1306 Microstructures near fracture surfaces of Cu-10%Zn alloy fractured in different manners
KANEKO Yoshihisa; TOMIYAMA Ryo; MIYAMOTO Hiroyuki; HASHIMOTO Satoshi
M&M材料力学カンファレンス, The Japan Society of Mechanical Engineers, 2012 "OS1306 - 1"-"OS1306-2", 22 Sep. 2012 - 312 Age Hardening Mechanism and Mechanical Properties of Nanocrystalline Ni-P Complex Metal by Electrodeposition
Kobayashi Natsu; Miyamoto Hiroyuki; Uenoya Toshiyuki; Hujiwara Hiroshi
関西支部講演会講演論文集, The Japan Society of Mechanical Engineers, 2012(87) "3 - 17", 16 Mar. 2012 - 311 Synthesis and mechanical properties of nanocrystalline Ni-WO_3 by electrodeposition
Takehara Shota; Miyamoto Hiroyuki; Uenoya Toshiyuki; Hujiwara Hiroshi
関西支部講演会講演論文集, The Japan Society of Mechanical Engineers, 2012(87) "3 - 16", 16 Mar. 2012 - 420 Identification of Damage Mechanism and CharacteriZation of Damage Developmentin Fatigue of Thermoplastic Composites through Thermoelastic Analysis
UENOYA Toshiyuk; KAWAMATA Saori; SUZUKI Ryuta; MIYAMOTO Hiroyuki
関西支部講演会講演論文集, The Japan Society of Mechanical Engineers, 2011(86) "4 - 20", 19 Mar. 2011 - Reversible nature of shear bands in copper single crystals subjected to iterative shear of ECAP in forward and reverse directions
Hiroyuki Miyamoto; Takumi Ikeda; Toshiyuki Uenoya; Alexei Vinogradov; Satoshi Hashimoto
Materials Science and Engineering A, ELSEVIER SCIENCE SA, 528(6) 2602 - 2609, 15 Mar. 2011 - Reversible nature of shear bands in copper single crystals subjected to iterative shear of ECAP in forward and reverse directions
Hiroyuki Miyamoto; Takumi Ikeda; Toshiyuki Uenoya; Alexei Vinogradov; Satoshi Hashimoto
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, ELSEVIER SCIENCE SA, 528(6) 2602 - 2609, Mar. 2011 - 331 Making of oxide dispersion nano crystal Ni by electrodeposition
竹原 翔太; 宮本 博之; 後藤 琢也
学術講演会講演論文集, 日本材料学会, 60 219 - 220, 2011 - Enhanced corrosion fatigue resistance of AISI304 bellows expansion by modifying the bellows shape
Takafumi Ono; Tomomi Fujikawa; Hiroyuki Miyamoto; Toshiyuki Uenoya; Masatoshi Matsumura
Materials Science and Technology Conference and Exhibition 2011, MS and T'11, 2 1261 - 1268, 2011 - Enhanced corrosion fatigue resistance of AISI304 bellows expansion by modifying the bellows shape
Takafumi Ono; Tomomi Fujikawa; Hiroyuki Miyamoto; Toshiyuki Uenoya; Masatoshi Matsumura
AIST Steel Properties and Applications Conference Proceedings - Combined with MS and T'11, Materials Science and Technology 2011, 611 - 618, 2011 - 720 Characterization of fatigue damage development in stitched CF/NY6 orthotropic laminates
UENOYA Toshiyuki; SUZUKI Ryuta; MIYAMOTO Hiroyuki
M&M材料力学カンファレンス, The Japan Society of Mechanical Engineers, 2010 458 - 460, 09 Oct. 2010 - 507 Prediction and Extension of Fatigue Life of a New Type Bel lows
MAEDA Yasuharu; MIYAMOTO Hiroyuki; UENOYA Toshiyuki; MATSUMURA Masatoshi
関西支部講演会講演論文集, The Japan Society of Mechanical Engineers, 2010(85) "5 - 7", 16 Mar. 2010 - Mechanical properties of Ni-Al2O3 nanocomposites by electrodeposition
上田 孝史郎; 宮本 博之; 上野谷 敏之
The Science and engineering review of Doshisha University, 同志社大学理工学研究所, 50(4) 151 - 156, Jan. 2010 - Formation of Deformation Twins and Related Shear Bands in Copper Single Crystals Pressed by ECAP
Takumi Ikeda; Hiroyuki Miyamoto; Toshiyuki Uenoya; Satoshi Hashimoto; Alexei Vinogradov
PRICM 7, PTS 1-3, TRANS TECH PUBLICATIONS LTD, 654-656 1231 - +, 2010 - Mechanical Properties of Electrodeposited Ni-SiO2 Nanocomposite
Hiroyuki Miyamoto; Koushirou Ueda; Toshiyuki Uenoya
PRICM 7, PTS 1-3, TRANS TECH PUBLICATIONS LTD, 654-656 1162 - 1165, 2010 - Effect of Simple Shear Deformation Prior to Cold Rolling on Texture and Ridging of 16% Cr Ferritic Stainless Steel Sheets
Hiroyuki Miyamoto; Tong Xiao; Toshiyuki Uenoya; Masaharu Hatano
ISIJ INTERNATIONAL, IRON STEEL INST JAPAN KEIDANREN KAIKAN, 50(11) 1653 - 1659, 2010 - Formation of deformation twins and related shear bands in copper single crystals pressed by ECAP
Takumi Ikeda; Hiroyuki Miyamoto; Toshiyuki Uenoya; Satoshi Hashimoto; Alexei Vinogradov
Materials Science Forum, TRANS TECH PUBLICATIONS LTD, 654-656 1231 - 1234, 2010 - Mechanical properties of electrodeposited Ni-SiO
2 nanocomposite
Hiroyuki Miyamoto; Koushirou Ueda; Toshiyuki Uenoya
Materials Science Forum, TRANS TECH PUBLICATIONS LTD, 654-656 1162 - 1165, 2010 - Effect of simple shear deformation prior to cold rolling on texture and ridging of 16% Cr ferritic stainless steel sheets
Hiroyuki Miyamoto; Tong Xiao; Toshiyuki Uenoya; Masaharu Hatano
ISIJ International, IRON STEEL INST JAPAN KEIDANREN KAIKAN, 50(11) 1653 - 1659, 2010 - Formation of deformation twins and related shear bands in a copper single crystal deformed by equal-channel angular pressing for one pass at room temperature
Hiroyuki Miyamoto; Alexei Vinogradov; Satoshi Hashimoto; Rika Yoda
Materials Transactions, JAPAN INST METALS, 50(8) 1924 - 1929, Aug. 2009 - Formation of Deformation Twins and Related Shear Bands in a Copper Single Crystal Deformed by Equal-Channel Angular Pressing for One Pass at Room Temperature
Hiroyuki Miyamoto; Alexel Vinogradov; Satoshi Hashimoto; Rika Yoda
MATERIALS TRANSACTIONS, JAPAN INST METALS, 50(8) 1924 - 1929, Aug. 2009 - 411 The influence of strain path on the development of shear bands in copper single crystal pressed by ECAP
IKEDA Takumi; KATAYAMA Soichi; MIYAMOTO Hiroyuki; UENOYA Toshiyuki; HASHIMOTO Satoshi; Vinogradov Alexei
学術講演会講演論文集, 日本材料学会, 58 285 - 286, 2009 - 410 Mechanical Properties of electrodeposited Ni and NiAl_2O_3
UEDA Koushirou; MIYAMOTO Hiroyuki; UENOYA Toshiyuki
学術講演会講演論文集, 日本材料学会, 58 283 - 284, 2009 - Corrosion of ultra-fine grained copper fabricated by equal-channel angular pressing
Hiroyuki Miyamoto; Kohei Harada; Takuro Mimaki; Alexei Vinogradov; Satoshi Hashimoto
CORROSION SCIENCE, PERGAMON-ELSEVIER SCIENCE LTD, 50(5) 1215 - 1220, May 2008 - Corrosion of ultra-fine grained copper fabricated by equal-channel angular pressing
Hiroyuki Miyamoto; Kohei Harada; Takuro Mimaki; Alexei Vinogradov; Satoshi Hashimoto
Corrosion Science, PERGAMON-ELSEVIER SCIENCE LTD, 50(5) 1215 - 1220, May 2008 - Application of ECAP for ferritic stainless steel sheets to enhance formability
宮本 博之; 御牧 拓郎; 松永 雅宏
The Science and engineering review of Doshisha University, 同志社大学理工学研究所, 48(4) 119 - 125, Jan. 2008 - Influence of a slip plane orientation with respect to the shear plane of ECAP on microstructure of copper single crystal subject to one pressing at room temperature
Soichi Katayama; Hiroyuki Miyamoto; Alexei Vinogradov; Satoshi Hashimoto
NANOMATERIALS BY SEVERE PLASTIC DEFORMATION IV, PTS 1 AND 2, TRANS TECH PUBLICATIONS LTD, 584-586 387 - 392, 2008 - Influence of a slip plane orientation with respect to the shear plane of ECAP on microstructure of copper single crystal subject to one pressing at room temperature
Soichi Katayama; Hiroyuki Miyamoto; Alexei Vinogradov; Satoshi Hashimoto
Materials Science Forum, TRANS TECH PUBLICATIONS LTD, 584-586 PART 1 387 - 392, 2008 - 235 Fatigue life prediction of Bellows type expansion joint by FEM and effect of shape parameters
Iguchi Ryo; Miyamoto Hiroyuki; Mimaki Takuro; Uchida Hiroshi
Materials and processing conference, The Japan Society of Mechanical Engineers, 2007(15) 163 - 164, 16 Nov. 2007 - Mechanism of corrosion and tarnishing in pure copper
宮本 博之
Material stage, 技術情報協会, 7(6) 1 - 4, Sep. 2007 - Sensitivity to fatigue cracks initiation of symmetrical < 110 > tilt grain boundaries in pure copper bicrystals in 1M NaNO2 solution
H. Miyamoto; K. Kuroda; T. Mimaki
PRICM 6: SIXTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-3, TRANS TECH PUBLICATIONS LTD, 561-565 2415 - 2418, 2007 - Sensitivity to fatigue cracks initiation of symmetrical 〈110〉tilt grain boundaries in pure copper bicrystals in 1M NaNO
2 solution
H. Miyamoto; K. Kuroda; T. Mimaki
Materials Science Forum, 561-565(PART 3) 2415 - 2418, 2007 - Viscous nature of deformation of ultra-fine grain aluminum processed by equal-channel angular pressing
H Miyamoto; K Ota; T Mimaki
SCRIPTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, 54(10) 1721 - 1725, May 2006 - Viscous nature of deformation of ultra-fine grain aluminum processed by equal-channel angular pressing
H. Miyamoto; K. Ota; T. Mimaki
Scripta Materialia, PERGAMON-ELSEVIER SCIENCE LTD, 54(10) 1721 - 1725, May 2006 - 429 Texture development and deformation twinning of copper single crystal Due to ECAP
KINOSHITA Masato; MIYAMOTO Hiroyuki; MIMAKI Takuro; HASHIMOTO Satoshi; VINOGRADOV Alexei
学術講演会講演論文集, 日本材料学会, 55 331 - 332, 2006 - 430 Deformation mechanism of ultra-fine grain Al processed by ECAP
MIYAMOTO Hiroyuki; Ota Kensaku; MIMAKI Takuro
学術講演会講演論文集, 日本材料学会, 55 333 - 334, 2006 - The effect of the initial orientation on microstructure development of copper single crystals subjected to equal-channel angular pressing
H Miyamoto; J Fushimi; T Mimaki; A Vinogradov; S Hashimoto
NANOMATERIALS BY SEVERE PLASTIC DEFORMATION, TRANS TECH PUBLICATIONS LTD, 503-504 799 - 804, 2006 - The effect of the initial orientation on microstructure development of copper single crystals subjected to equal-channel angular pressing
H. Miyamoto; J. Fushimi; T. Mimaki; A. Vinogradov; S. Hashimoto
Materials Science Forum, TRANS TECH PUBLICATIONS LTD, 503-504 799 - 804, 2006 - Dislocation structures and crystal orientations of copper single crystals deformed by equal-channel angular pressing
H. Miyamoto; J. Fushimi; T. Mimaki; A. Vinogradov; S. Hashimoto
Materials Science and Engineering A, ELSEVIER SCIENCE SA, 405(1-2) 221 - 232, 25 Sep. 2005 - Dislocation structures and crystal orientations of copper single crystals defonned by equal-channel angular pressing
H Miyamoto; J Fushimi; T Mimaki; A Vinogradov; S Hashimoto
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, ELSEVIER SCIENCE SA, 405(1-2) 221 - 232, Sep. 2005 - Interphase sliding in CuZnSn new suprplastic alloys
宮本 博之
26 119 - 125, 2005 - Interphase sliding in CuZnSn new suprplastic alloys
Archives of Materials Science, 26 119 - 125, 2005 - The role of grain boundary plane orientation on intergranular corrosion of symmetric and asymmetric [110] tilt grain boundaries in directionally solidified pure copper
H Miyamoto; K Ikeuchi; T Mimaki
SCRIPTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, 50(12) 1417 - 1421, Jun. 2004 - The role of grain boundary plane orientation on intergranular corrosion of symmetric and asymmetric [1 1 0] tilt grain boundaries in directionally solidified pure copper
H. Miyamoto; K. Ikeuchi; T. Mimaki
Scripta Materialia, PERGAMON-ELSEVIER SCIENCE LTD, 50(12) 1417 - 1421, Jun. 2004 - Microstructure and texture development of copper single crystals deformed by equal-channel angular pressing
H Miyamoto; U Erb; T Koyama; T Mimaki; A Vinogradov; S Hashimoto
PHILOSOPHICAL MAGAZINE LETTERS, TAYLOR & FRANCIS LTD, 84(4) 235 - 243, Apr. 2004 - Microstructure and texture development of copper single crystals deformed by equal-channel angular pressing
H. Miyamoto; U. Erb; T. Koyama; T. Mimaki; A. Vinogradov; S. Hashimoto
Philosophical Magazine Letters, TAYLOR & FRANCIS LTD, 84(4) 235 - 243, Apr. 2004 - 832 ECAP加工した超微細結晶銅の応力腐食割れ : 亀裂伝播速度に及ぼす短時間焼鈍の影響(塑性変形・変形挙動-II,一般セッション,第53期学術講演会)
宮本 博之; 加藤 千昌; 御牧 拓郎; Vinogradov A.; 橋本 敏
学術講演会講演論文集, 日本材料学会, 53 537 - 538, 2004 - Relation between Unusual Morphology of Intergranular Corrosion and External Potential in a Pure Copper Bicrystal
Wakayama Naoki; Miyamoto Hiroyuki; Mimaki Takuro
The science and engineering review of Doshisha University, Doshisha University, 45(2) 28 - 33, 2004 - 高純度銅双結晶の対称傾角粒界における腐食反応とその特異形態
宮本 博之
銅と銅合金, 43 227 - 231, 2004 - Interphase boundary sliding of two-phase (a/b),(b/g) and (g/a)CuZnSn alloy couples produced by solid-to-solid diffusion bonding
宮本 博之
380 34 - 40, 2004 - Interphase boundary sliding of two-phase (a/b),(b/g) and (g/a)CuZnSn alloy couples produced by solid-to-solid diffusion bonding
Materials Science and Engineering A, 380 34 - 40, 2004 - Deformation structure and crystal orientation of copper single crystals deformed by equal channel angular pressing
Hiroyuki Miyamoto; Uwe Erb; Tetsuo Koyama; Takuro Mimaki; Alexei Vinogradov; Satoshi Hashimoto
Materials Science Forum, 426-432(4) 2795 - 2800, 2003 - Deformation structure and crystal orientation of copper single crystals deformed by equal channel angular pressing
H Miyamoto; U Erb; T Koyama; T Mimaki; A Vinogradov; S Hashimoto
THERMEC'2003, PTS 1-5, TRANS TECH PUBLICATIONS LTD, 426-4 2795 - 2800, 2003 - Fatigue crack nucleation of pure copper single crystals in 1M NaNO
2 aqueous solution
H. Miyamoto; T. Mimaki; S. Hashimoto
Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties, TAYLOR & FRANCIS LTD, 82(17-18) 3311 - 3319, Nov. 2002 - Stress corrosion crack propagation behaviour of ultra-fine grained copper produced by equal-channel angular pressing technique
Takashi Yamasaki; Hiroyuki Miyamoto; Takuro Mimaki
Zairyo/Journal of the Society of Materials Science, Japan, 51(11) 1248 - 1252, Nov. 2002 - Fatigue crack nucleation of pure copper single crystals in 1 M NaNO2 aqueous solution
H Miyamoto; T Mimaki; S Hashimoto
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, TAYLOR & FRANCIS LTD, 82(17-18) 3311 - 3319, Nov. 2002 - Behavior of intergranular corrosion of <011> tilt grain boundaries of pure copper bicrystals
H. Miyamoto; K. Yoshimura; T. Mimaki; M. Yamashita
Corrosion Science, PERGAMON-ELSEVIER SCIENCE LTD, 44(8) 1835 - 1846, Aug. 2002 - Corrosion, stress corrosion cracking and fatigue of ultra-fine grain copper fabricated by severe plastic deformation
A Vinogradov; H Miyamoto; T Mimaki; S Hashimoto
ANNALES DE CHIMIE-SCIENCE DES MATERIAUX, EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 27(3) 65 - 75, May 2002 - 115 <011> 傾角粒界双結晶の粒界腐食尾根形成について
谷口 旭; 宮本 博之; 山下 正人; 御牧 拓郎
学術講演会講演論文集, 日本材料学会, 51 29 - 30, 2002 - 113 単一および二重すべり系を有する Cu-9at.%Al 合金単結晶の腐食疲れについて
金 鳳蓮; 宮本 博之; 橋本 敏; 御牧 拓郎
学術講演会講演論文集, 日本材料学会, 51 25 - 26, 2002 - Mechanical, Thermal and Stress-Corrosion Properties of Ultra-Fine Grain Copper
宮本 博之
27 197 - 206, 2002 - 等径角度付き押し出し法により作製された超微細結晶銅の応力腐食き裂伝ぱ挙動
宮本 博之
材料, (51) 1248 , 2002 - Mechanical, Thermal and Stress-Corrosion Properties of Ultra-Fine Grain Copper
宮本 博之
Ann Chim Sci Mat, (27) S197-S206 , 2002 - Corrosion, stress corrosion cracking and fatigue of ultra-fine grain copper fabricated by severe plastic deformation
Alexei Vinogradov; Hiroyuki Miyamoto; Takuro Mimaki; Satoshi Hashimoto
Annales de Chimie: Science des Materiaux, EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 27(3) 65 - 75, 2002 - Mechanical, Thermal and Stress-Corrosion Properties of Ultra-Fine Grain Copper
Ann.Chim.Sci.Mat, 27 197 - 206, 2002 - Mechanical, Thermal and Stress-Corrosion Properties of Ultra-Fine Grain Copper
Ann Chim Sci Mat, (27) S197-S206 , 2002 - Behaviour of Intergranular Corrosion of <011> Tilt Grain Boundaries of Pure Copper Bicrystals
Corrosion Science, (44) 1835 - 1846, 2002 - Intergranular Stress Corrosion Cracking of Pure Copper <111> Tilt Bicrystals
Interface Science, (9) 281 - 286, 2002 - Cyclic deformation of ferritic stainless steel single crystals showing the stress asymmetry
Y Kaneko; Y Nagai; H Miyamoto; T Mimaki; S Hashimoto
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, ELSEVIER SCIENCE SA, 319(319-321) 559 - 563, Dec. 2001 - Tensile orientation dependence of surface-roughness evolution in cyclically deformed Fe-30%Cr alloy single crystals
Takashi Yamasaki; Yoshihisa Kaneko; Hiroyuki Miyamoto; Satoshi Hashimoto; Takuro Mimaki
Materials Science and Engineering A, ELSEVIER SCIENCE SA, 319-321(319-321) 569 - 573, Dec. 2001 - Superplastic deformation of micro-specimens of duplex stainless steel
H Miyamoto; T Mimaki; S Hashimoto
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, ELSEVIER SCIENCE SA, 319(319-321) 779 - 783, Dec. 2001 - Cylic deformation of ferritic stainless steel single crystals showing the stress asymmetry
Y. Kaneko; Y. Nagai; H. Miyamoto; T. Mimaki; S. Hashimoto
Materials Science and Engineering A, ELSEVIER SCIENCE SA, 319-321(319-321) 559 - 563, Dec. 2001 - Tensile orientation dependence of surface-roughness evolution in cyclically deformed Fe-30%Cr alloy single crystals
T Yamasaki; Y Kaneko; H Miyamoto; S Hashimoto; T Mimaki
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, ELSEVIER SCIENCE SA, 319(319-321) 569 - 573, Dec. 2001 - Superplastic deformation of micro-specimens of duplex stainless steel
Hiroyuki Miyamoto; Takuro Mimaki; Satoshi Hashimoto
Materials Science and Engineering A, ELSEVIER SCIENCE SA, 319-321(319-321) 779 - 783, Dec. 2001 - Intergranular stress corrosion cracking of pure copper 〈111〉 tilt bicrystals
Hiroyuki Miyamoto; Hirohito Koga; Takuro Mimaki; Satoshi Hashimoto
Interface Science, 9(3-4) 281 - 286, Nov. 2001 - Stress corrosion cracking susceptibility of ultra-fine grain copper produced by equal-channel angular pressing
T. Yamasaki; H. Miyamoto; T. Mimaki; A. Vinogradov; S. Hashimoto
Materials Science and Engineering A, ELSEVIER SCIENCE SA, 318(1-2) 122 - 128, Nov. 2001 - Stress corrosion cracking susceptibility of ultra-fine grain copper produced by equal-channel angular pressing
T Yamasaki; H Miyamoto; T Mimaki; A Vinogradov; S Hashimoto
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, ELSEVIER SCIENCE SA, 318(1-2) 122 - 128, Nov. 2001 - Effect of Strain Rate on the Corrosion Fatigue Crack Propagation of Cu-9at%Al Single Crystals
宮本 博之
Procceeding of ESCCD2, 2001 - 等径角度付き押出し法により作製された超微細結晶銅の1kmol/m3 NaNO2水溶液中での繰り返し変形
宮本 博之
日本金属学会誌, (65) 843 - 847, 2001 - Phase Transformation in Solid-Solid Diffusion Bonding
Miyamoto Hiroyuki; Mimaki Takuro; Hashimoto Satoshi
The science and engineering review of Doshisha University, Doshisha University, 42(42) 54 - 61, 2001 - Effect of Strain Rate on the Corrosion Fatigue Crack Propagation of Cu-9at%Al Single Crystals
Procceeding of ESCCD2, 2001 - Cyclic deformation in 1 Kmol/m3 NaNO
2 aqueous solution of ultra-fine grained copper produced by equal channel-angular pressing technique
T. Yamasaki; H. Miyamoto; T. Mimaki
Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, JAPAN INST METALS, 65(9) 843 - 847, 2001 - Phase Transformation in Solid-Solid Diffusion Bonding
Miyamoto Hiroyuki; Mimaki Takuro; Hashimoto Satoshi
The Science and Engineering Review of Doshisha University, Doshisha University, 42(42) 54 - 61, 2001 - Crack initiation behaviour in corrosion fatigue of copper single crystals in 1M NaNO
2 solution
Hiroyuki Miyamoto; Takayuki Morikawa; Takuro Mimaki; Satoshi Hashimoto
Zairyo/Journal of the Society of Materials Science, Japan, Society of Materials Science Japan, 49(11) 1179 - 1184, Nov. 2000 - 608 高純度銅 [011] 傾角双結晶の粒界腐食挙動
吉村 和真; 宮本 博之; 山下 正人; 御牧 拓郎
学術講演会講演論文集, 日本材料学会, 49 165 - 166, 2000 - 二相合金の超塑性変形における異相界面の役割
宮本 博之
同志社大学工学会報, (42) 20 , 2000 - 銅単結晶の1M NaNO2溶液中の腐食疲労亀裂発生挙動
宮本 博之
材料, (49) 1179 - 1184, 2000 - Effect of Surface Orientatin on the Behaviour of Intergranulr Corrosion of <110> Tilt Σ 9 Grain Boundaries of High Purity Copper Bicrystals
MIYAMOTO Hiroyuki; YAHASHI Junki; YAMASHITA Masato; MIMA Takuro
The science and engineering review of Doshisha University, Doshisha University, 40(3) 121 - 129, Oct. 1999 - 331 高純度銅 [110] 傾角Σ9 双結晶の粒界腐食挙動
宮本 博之; 山下 正人; 矢橋 淳規; 長野 博夫; 御牧 拓郎
学術講演会講演論文集, 日本材料学会, 48 293 - 294, 1999 - 高純度銅Σ９＜１１０＞傾角双結晶の粒界腐食挙動に及ぼす表面方位の影響
宮本 博之
同志社大学理工学研究報告, (40) 43474 , 1999 - Propagation behaviour of intergranular stress-corrosion cracking of Cu-9at.%Al bicrystals shaped to the tapered double cantilever beam specimen
T. Mimaki; H. Ando; H. Miyamoto; Y. Kaneko; S. Hashimoto
Materials Science Forum, TRANSTEC PUBLICATIONS LTD, 294-296 169 - 172, 1999 - Measurement of grain boundary corrosion current on copper [110]-tilt bicrystals by scanning vibrating electrode technique
M. Yamashita; H. Miyamoto; J. Yahashi; H. Uchida; S. Hashimoto; T. Mimaki
Materials Science Forum, TRANSTEC PUBLICATIONS LTD, 294-296 739 - 742, 1999 - Sliding mechanism of FCC/BCC interphase boundaries
H. Miyamoto; T. Mimaki; S. Hashimoto
Materials Science Forum, 294-296 637 - 640, 1999 - Cyclic stress-strain response of ferritic stainless steel single crystals oriented for single slip and multiple slip
T Yamasaki; Y Kaneko; H Miyamoto; T Mimaki; S Hashimoto
FATIGUE '99: PROCEEDINGS OF THE SEVENTH INTERNATIONAL FATIGUE CONGRESS, VOLS 1-4, CHINA HIGHER EDUCATION PRESS BEIJING, 181-186 181 - 186, 1999 - Effect of Surface Orientation on the Behaviour of Intergranular Corrosion of <110> Tilt S9 Grain boundaries of High Purity Copper Bicrystals
The Science and Engineering Review of Doshisha University, (40) 43474 , 1999 - 240 走査型振動電極法による Cu<110> 傾角Σ3,Σ11 双結晶の粒界腐食電位の測定
矢橋 淳規; 宮本 博之; 山下 正人; 内田 仁; 長野 博夫; 御牧 拓郎
学術講演会講演論文集, 日本材料学会, 47 257 - 258, 1998 - 二相ステンレス鋼双結晶の相界面すべりの機構
宮本 博之
日本金属学会誌, (62) 255 - 260, 1998 - Propagation Behavior of Intergranular Stress Corrosion Cracking of Cu-9at%Al Bicrystals Shaped to the Tapered Double Cantilever Beam Specimens
Materials Science Forum, 294-296, 1998 - Measurement of Grain Boundary Corrosion Current on Copper [110] Tilt Bicrystals by Scanning Vibrating Electrode Technique
Materials Science Forum, 294-296, 1998 - Sliding Mechanism of BCC/FCC Interphase Boundaries
Materials Science Forum, 294-296, 1998 - Mechanism of the interphase-boundary sliding in two-phase (γ/α) stainless steel bicrystals
Satoshi Hashimoto; Hiroyuki Miyamoto; Takuro Mimaki
Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, JAPAN INST METALS, 62(3) 255 - 260, 1998 - Role of Interphase-boundary Sliding in a Super-plastic flow of Duplex Materials Cousisting of a Soft and a Hard Phases
宮本 博之
Proceedings of JIMIS-7on Aspects of High Temperatuve Deformation and Fracture in Crystalline Material, 115 , 1993 - Role of Interphase-boundary Sliding in a Super-plastic flow of Duplex Materials Cousisting of a Soft and a Hard Phases
Proceedings of JIMIS-7on Aspects of High Temperatuve Deformation and Fracture in Crystalline Material, 115 , 1993 - Interphase Boundary Sliding in Two-Phase(2/2)-FeCrNi Alloy Bicrystals Produced by a Solid-Solid Diffusion Method
宮本 博之
Mechanical Behavior of Materials-VI, 6 655 , 1991 - Interphase Boundary Sliding in Two-Phase(2/2)-FeCrNi Alloy Bicrystals Produced by a Solid-Solid Diffusion Method
Mechanical Behavior of Materials-VI, 6 655 , 1991 - Change in the Relation between Current and Strain during Cyclic Deformation of Cu Single Crystals in a NaNO2 Solution
宮本 博之
Proceeding of Fatigue 99 - Change in the Relation between Current and Strain during Cyclic Deformation of Cu Single Crystals in a NaNO2 Solution
Proceeding of Fatigue 99
Books etc
Works
- 二相黄銅の応力腐食割れ
2000 -2001 - stress corrosion cracking of two-phase brass
2000 -2001 - フェライト系ステンレス鋼の液体金属脆化
1997 -2001 - Liquid metal embrittlement of feritic stainless steel
1997 -2001 - 二相ステンレス鋼の超塑性と異相界面すべり
1997 -1999 - Superplasticity of two-phase stainless steels
1997 -1999 - 強ひずみ加工法による結晶組織微細化
1997 - Ultra-fine grain structure by severe plastic deformation
1997
Research Projects
- 強ひずみ加工法により作製した超微細結晶組織材料の逐次加工性向上
田中 達也; 宮本 博之
日本学術振興会, 科学研究費助成事業, 2022/04 -2025/03, 基盤研究(C), 同志社大学 - Effect of grain refinement on corrosion behaivor of high-entropy alloys
宮本 博之
二元Fe-Cr合金やステンレス鋼では結晶粒微細化により耐食性が向上することが知られており、特に強ひずみ加工（SPD）法による結晶粒超微細化はその効果が大きい。微細化によりCrの拡散が促進されて安定な不動態皮膜を形成するためと考えられている。Cr含有ハイエントロピー合金（HEA）においても不働態被膜の形成にはCrの影響が大きく、Fe-Cr合金と同様に、結晶粒微細化による耐食性の向上が予想される．公募研究の第１期ではＣｒ量を変化さたCoCrFeNiMn 合金を作製し，高圧ねじり加工（HPT）により結晶粒を微細化させた後に腐食挙動を調査した結果、結晶粒微細化の腐食挙動への影響は確認できなかった．一方、アーク溶解ではHEA合金特有の濃度偏析や介在物を完全除去することは難しく、微量な存在が耐食性に及ぼす影響が大きく、これらの影響も否定できない。そこで本研究ではさらに清浄度が高い真空溶解により材料を作製し、前回と同様にCr含有量を0～20at%の範囲で系統的に変化させた材料についてHPTによる結晶粒微細化が耐食性に及ぼす影響を明らかにすることを目的とした。その結果、以下のことが明らかになった。 １．Ｃｒ含有量が10％以上では粗粒材，HPT材ともに不働態化による電流抑制と孔食発生による電流上昇が確認された。Cr含有量が増加するほど孔食電位は向上した．また，粗粒材，HPT材で孔食電位に大きな差異は認められなかった． ２．0％Ｃｒ材では粗粒材およびHPT材とも不働態化が生じない。一方、６％材ではCG材では全面溶解するのに対して、ＨＰＴ材で不働態化による電流抑制と孔食発生が確認された。Fe-Cr合金と同様に、結晶粒超微細化により不働態化するＣｒ下限値以下においても不働態化が生じたものと考えられる。, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 2021/04 -2023/03, Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), Doshisha University - Enhanced corrosion resistance of high entropy alloys by grain refinement
宮本 博之
本研究では，合金構成元素の割合と強ひずみ加工のひとつである高圧ねじり（ＨＰＴ）加工により結晶粒を微細化させたCoCrFeNiMnハイエントロピー合金(HEA)の耐食性を調査することで，HEAの耐食性に及ぼす合金構成元素や結晶粒径の影響を調査した。材料はCrの含有量を変化させた5種類のHEAをアーク溶解にて作製し、強ひずみ加工の一種であるHPT加工を施し結晶粒を微細化させた。粗粒材（CG材）の結晶粒径は約360ミクロンであり、結晶粒微細化させたHPT材の結晶粒径は約40ナノメートルであった。耐食性の評価には1M H2SO4溶液および3.5％NaCl溶液中での分極曲線測定を用いた。結果はCr含有量が多い試料ほど孔食電位が向上し、不動態保持電流が低下し、HEAの耐食性にCrが大きな影響を与えることがわかった。また、CG材とHPT材で耐食性に大きな差は見られなかった。さらに同一のCr含有量を有する二元Fe-Cr合金とHEAを比較するとFe-Cr合金に比べHEAは耐食性が良いことがわかり、安定した不動態皮膜を形成していると考えられる．この原因を探るためＸＰＳ分析により不動態皮膜の分析を行った．表面分析からHEAの不動態皮膜は最表面ではCrの濃度が高く，不動態皮膜内部ではNiが濃化した皮膜組成になっていることがわかり、不動態皮膜内部でのNi濃化と最表面でのCr濃化の効果が合わさりがHEAの安定した不動態皮膜が形成され耐食性が向上したと考えられる．さらにＨＰＴ材とＣＧ材では不動態被膜中でのＣｒおよびＮｉ濃度の差は見られなかった。, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), 2019/04 -2021/03, Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), Doshisha University - Grain boundary enhanced ductility of ultrafine grained materials
Miyamoto Hiroyuki
Severe plastic deformation (SPD) can fabricate high-strength materials by forming ultrafine grained (UFG) microstructure. But, in general, as in other methods, strengthening accompanies ductility loss. Low ductility, which is usually evaluated by the uniaxial tensile tests, has been attributed to low strain hardening of UFG structure where dislocation slip and its accumulation is very limited. In the present work, it is shown that the compressive ductility, or classically called malleability of UFG materials can be comparable or potentially superior to that of coarse-grained counterparts in an appropriate stress state. The high malleability of UFG materials by SPD can be attributed to the unique deformation mechanism related with non-equilibrium grain boundaries and their high damage tolerance. The present results present a prospect for expanding industrial application of UFG materials, which has been limited because of low tensile ductility., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 2018/04 -2021/03, Grant-in-Aid for Scientific Research (C), Doshisha University - Corrosion properties of magnesium alloys with various microstructure by severe plastic deformation
YUASA Motohiro; MIYAMOTO Hiroyki; FURUKAWA Ryo; MAJIMA Masasige; MAULIDI Muhammad Lutfi; SARR Mouhamadou Moustapha
Corrosion resistance of ZK60 alloy and pure Mg processed by equal channel angular pressing (ECAP) was investigated using immersion tests in 5 wt% NaCl aqueous solution. The corrosion rates of ECAPed ZK60 alloys increased by increasing number of ECAP passes. Potentiodynamic polarization curves suggested that cathodic reaction was activated, and a passive film formed during immersion tests was weakened by increasing ECAP passes. This can be due to increasing intermetallic compounds and dislocation density during ECAP process. After heat treatment at 623 K for 1.5 h, the corrosion rates were significantly reduced by the heat treatment. In contrast, the corrosion rate of pure Mg decreased after 1 pass ECAP and gradually increased after 2 pass ECAP. The grain size of ECAPed pure Mg was smaller than that of no-ECAPed pure Mg. Increasing the pass number, the grain size increased. After heat treatment, the corrosion rates increased. This can be due to the grain growth by heat treatment., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), 2017/04 -2019/03, Grant-in-Aid for Young Scientists (B), Doshisha University - Processing of ultrafine grained materials free of residual dislocations by SPD and annealling
Miyamoto Hiroyuki
In this work, the effect of grain size in the sub-micron range on the SCC of Cu-10wt%Zn alloys is investigated using constant load tests in ammonia vapor. The grain size is systematically controlled from 0.12 μm to 40 μm by either cold-rolling or ECAP, followed by annealing. The specimens are kept in tension until fracture under a constant stress ammonia vapor. The time to fracture has increased with decreasing grain size reaching 1 μm, but decrease with further decreasing grain size into the sub-micron range. In other words, there is a critical grain size that the susceptibility to SCC changes. Sensitivity to IGSCC is associated with GB energy. Non-equilibrium GB have higher GB energy than equilibrium GB because they contain extrinsic dislocation in grains induced by severe plastic deformation (SPD) process, and possibly exhibit GB sliding. This inverse trend in the sub-micron range is discussed in terms of a SPD-induced ultrafine grain (UFG) microstructure, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2014/04 -2017/03, Grant-in-Aid for Scientific Research (C), Doshisha University - 電着法によるナノ粒子分散バルクナノメタルの開発と分散制御
宮本 博之
本研究の目的は、電着法を応用して母相粒径よりもさらに微細で、酸化物粒子を均一分散させたバルクナノメタルを作製し、強度や変形挙動に及ぼす影響、さらには熱的安定性向上への効果を明らかにすることを目的とする。公募第１期はナノスケールWO3粒子を懸濁させた電解液を使用した電着法によりナノ結晶Niの作製をおこなった。第２期は加水分解によるナノスケール粒子の合成と電着を組み合わせた新しい手法による粒子分散を試みている。 公募班第１期では、電解液にＷＯ３粒子を懸濁させた電析共析法により、粒径が約40nmの母相ナノ結晶ニッケル中に10nm程度のＷＯ３粒子が分散したナノ粒子分散ナノ結晶ニッケルを合成することに成功した。電解ニッケル中に取り込まれる過程で破砕してさらに結晶構造が単斜晶から正方晶へ変化する興味深い現象が確認された。しかし、分散粒子の凝集や偏在も一部に観察され、強度や熱的安定性への効果も限定的であった。 そこで、本年度は新しい方法として、電解液にNa2WO4と溶解させて、WO42-として電離したイオンをpHや電極電位を制御して下記の反応によりWO3粒子を電解ニッケル中に析出させて微細なWO3粒子が分散したナノ結晶Ｎｉを作製することに成功した。Na2WO4の加水分解反応によりWO３が形成した点を確認するために、本年度は予備試験として、電解開始前に一定時間放置したのちに水分を蒸発させて、残渣を回収して、X線回折、電子顕微鏡による観察を行った。その結果、WO３粒子が合成することを確認した。しかも、これらの粒子は凝集されずに分散していた。さらに電着材の組織を確認した結果、結晶粒径が約20nmの母相ニッケル組織中に同一レベルのWO3粒子が分散していることが電子顕微鏡とＥＤＳにより確認できた。また、結晶粒径が同レベルのナノ結晶ニッケルに比較してさらに硬度上昇と熱的安定性の向上が確認できた。, 日本学術振興会, 科学研究費助成事業 新学術領域研究(研究領域提案型), 2013/04 -2015/03, 新学術領域研究(研究領域提案型), 同志社大学 - 電着法による強度と熱的安定性が卓越したナノ粒子分散型バルクナノ金属の創成
宮本 博之
昨年度は、電解液にＷＯ３粒子を懸濁させた電析共析法により、粒径が約40nmの母相ナノ結晶ニッケル中に10nm以下のＷＯ３粒子が分散したナノ粒子分散ナノ結晶ニッケルを合成することに成功した。結晶粒径が同程度のナノ結晶組織を有する純ニッケルよりもビッカース硬度にて１００ＨＶ程度硬化していたが、析出強化機構（オロワン機構）から推定される硬度上昇には至らなかった。この結果を受けて,今年度は分散粒子径や分散量、母相結晶粒径を系統的に変化させて強化機構を明らかにする予定であったが, 分散粒子の凝集や偏在の問題が解決できなかった. そこで、析出反応系であるＮｉ－Ｐ合金を用いて、時効強化による研究を行った。電解液を種々検討することにより、Ni3P析出量を制御しつつ母相ニッケル結晶粒径を10ミクロン程度から100nm以下まで系統的に変化させることが可能になった。その結果は同レベルＰ含有量について結晶粒径がナノオーダーまで微細化すると析出強化による硬化量がミクロンオーダーの結晶粒径を有する場合に比較して低下することが明らかになった。すなわち、ナノ結晶材料では粒界関与型の変形機構に変化するため、いわゆる転位阻止型の析出機構は有効に作用しないと考えられる。, 日本学術振興会, 科学研究費助成事業 新学術領域研究(研究領域提案型), 2011/04 -2013/03, 新学術領域研究(研究領域提案型), 同志社大学 - Texture control for high formability of ferritic stainless steel by combined processing of ECAP and cold-rolling
MIYAMOTO Hiroyuki
Equal-channel angular pressing (ECAP) was applied to 16mass%Cr steel sheets for one pass prior to cold rolling in order to improve formability and alleviate ridging of the sheets. Effect of channel angle of ECAP (90° and 120°) on the deformation microstructure and the subsequent recrystallization was focused. One-pass ECAP indeed modified the cold-rolled microstructures, texture and subsequent recrystallization as compared with that in cold rolling alone. In particular, grain-scale shear bands were introduced during ECAP in otherwise hard-to-recrystallize <001>//ND grains by ECAP, and they facilitated the recrystallization. However, the effect of reducing the channel angle from 120°to 90°on the recrystallization and the formability was limited in spite of higher shear strain imposed on the sheets., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2010 -2012, Grant-in-Aid for Scientific Research (C), Doshisha University - Wide-area SEM observation of dislocation structures and the restructuring of fracture estimation model
HASHIMOTO Satoshi; KANEKO Yoshihisa; VINOGRADOV Alexei; NAKAMURA Atsutomo; MIYAMOTO Hiroyuki
Microstructures of metallic materials fractured under various conditions were analyzed using the electron channelling contrast imaging (ECCI) technique which enables us to observe dislocation in a scanning electron microscope, and the electron backscatter diffraction (EBSD) technique. Based on the microstructure analyses, we developed the method to determine fracture process, and investigated factors which determine crack propagation path and crack initiation site. Fatigue damage of ultrafine-grained materials could also be estimated with these techniques., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), 2007 -2009, Grant-in-Aid for Scientific Research (A), Osaka City University - Reduction of Grain boundary energy to stabilize ultra-fine grain structure produced by severe plastic deformation
MIYAMOTO Hiroyuki; MIMAKI Takuro
等径角付き押し出し(Equal-Channel Angular Pressing : ECAP)法により超微細結晶化したα黄銅(Cu-10wt%Zn)について応力腐食割れ(Stress Corrosion Cracking : SCC)感受性を評価し, 結晶粒径の影響, 平衡・非平衡粒界の影響を明らかにする事を目的とした. 強ひずみ加工法の一つであるECAP法により室温で8パス加工することにより, 結晶粒径が平均約100nmまで微細化することに成功した. 8パス加工材ではECAP加工後に200℃で40秒の短時間熱処理を行った. 強ひずみ加工で形成した粒界は過剰な転位を有する非平衡粒界と考えられており, この熱処理により過剰な転位は回復し, 平衡粒界に変化すると考えられる. さらに比較として, ECAP加工しない0パス材, 加工硬化を目的とした1パス材を評価した. SCC試験は, I型試験片により室温(約290K), 14%NH_3雰囲気中に一定ひずみのもとで24時間放置した後のき裂長さを評価した SCC試験の結果, 8パスした超微細結晶材は0パス材、1パス材に比べて、σ/σys(σは負荷応力,σysは0.2%耐力)が低い値でき裂の発生が確認された. また、ECAP加工後の短時間熱処理によりき裂が発生する応力が高くなり、SCC感受性が低下することが明らかとなった. ECAP加工などの強ひずみ加工では結晶粒の微細化とともに結晶粒界が非平衡となり、粒界エネルギが高くなったことがSCC感受性の高まった原因だと考えられる. なと、熱的安定性については有意な差は確認されなかった, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2007 -2008, Grant-in-Aid for Scientific Research (C), Doshisha University - A study on the clarification of formation mechanism, environmental embrittlement and fatigue behavior of nanocrystals
MIMAKI Takuro; MIYAMOTO Hiroyuki
Ultra-fine grain copper samples were produced by ECAP (Equal-Channel angular pressing) technique using well-oriented copper single crystals having, <001>, <011>. and <111> axis direction. The investigations were performed during the formation of ultra-fine crystals by severe plastic deformation. The fining process in the formation of ultra-fine grains was divided to the following three groups ; (1)Shear bands were formed parallel to the shear direction of the initial single crystal inserted, (2)Deformation bans were deformed to the insert direction of the single crystal and (3)Both bands described above were not formed. The dislocation structure of the shear band were formed by very dense and tuft-like microbands and the mirror relationship was observed between the microband and the matrix. From a detailed TEM observation, the deformation twins with about 200 nm width were observed. The formation mechanism of the deformation twin was clarified as the "Pole mechanisms". From the investigations on behavior of crack initiation and propagation, it was clarified that crack initiation and propagation mode were intergranular type and tendency of the relation between stress intensity factor and crack propagation rate was divided to two regions as same as the practical use materials. The SCC sensitivity was extremely decrease by the crystal fining. The cracks in specimen produced from single crystals were branched off to many direction, snaked and it takes much time to propagate, compared with the specimen produced from polycrystals. Impact test was performed using ultra-fine grained aluminum. From the results, the impact strength of the ultra-fine grained aluminum was 1.6〜2.3 times higher than the practical use aluminum. Under both room and very low temperature, 77K, the impact strength was showed the very clear strain rate dependence, and the impact strength was increased with strain rate increasing. These results described above were already published in Phil.Mag.Letters, Scripta Materialia, Mater. Sci. & Engg. and etc., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2004 -2005, Grant-in-Aid for Scientific Research (C), Doshisha University - 集合組織制御した微細粒二相ステンレス鋼板の超塑性
橋本 敏; 宮本 博之; 加藤 博之; 御牧 拓郎
二相ステンレス鋼は微細粒超塑性を示す代表的な金属材料であり、一般的に微細粒超塑性においては粒界すべりおよび相界面すべりが支配的な機構であることが知られている。著者らはγ(FCC)/α(BCC)ステンレス鋼異相双結晶等を用いたクリープ試験からγ/α相界面は本質的に単相粒界に比べてすべり易いことを明らかにした[1,2]。一方、単相の粒界すべりは方位関係の影響を受けることが純Zn、Al等について報告されていることから相界面すべりについてもγ相/α相の方位関係の影響を受けることが予想される。そこで本研究では異相間の方位関係分布の定性的指標となる各相の集合組織が二相ステンレス鋼板の超塑性変形挙動に及ぼす影響を明らかにすることを目的とする。本年度は第一段階として他に報告されているα(FCC)/β(BCC)Brass等の双結晶クリープの実験データも加えてFCC/BCC相界面すべり機構の理論的検討を行い[3]、さらに相界面と単相粒界における本質的なすべり易さの違いを含めた二相(FCC/BCC)鋼の変形機構を提案し[4]、これまで報告されてきた実験データにより検証をおこなった。 双結晶を用いたクリープ試験から、変形抵抗が異なるFCC相およびBCC相から構成される相界面と単相粒界におけるすべり抵抗の顕著な差異が明らかとなった。この知見より超塑性変形における相界面の役割として、相界面すべりにより超塑性ひずみの大部分を請け負う変形モデルを提案した。これは第二相が変形中に粒成長を抑制し微細組織を安定化するという従来の役割とは異なる視点から変形機構を示唆するものである。, 日本学術振興会, 科学研究費助成事業 特定領域研究(A), 1998 -1998, 特定領域研究(A), 京都大学 - Emvironmental embrittlement of ultra-fine grain materials
Grant-in-Aid for Scientific Research, 1997, Competitive research funding - 超微細結晶材料の環境脆化
科学研究費補助金, 1997, Competitive research funding
Research cooperation among industry, academia and government
- Joint Research Theme：Environmental EmbrittlementKeywordstress corrosion cracking, corrosion fatigue, grain boundary embrittlementRemarks：Cooperative research with other research organization including private (industrial) sectors
Research Seeds
- Improvement of the Mechanical Properties of Magnesium Alloy AZ31 Using Nonlinear Twist Extrusion (NTE)Research Interests: metal metal working forging extrusion nanostructureResearch Fields: Chemicals, Nanotechnology and MaterialsSummary: Magnesium alloys poses superior properties such as low density and high specific strength. However, its applications has been limited by their inferior cold workability. Mg-3%Al-1%Zn(AZ31) was subjected to severe plastic deformation(SPD) technique called nonlinear twist extrusion(NTE). Deformation was achieved for 4 passes at 373K,423K,473K,523K and 573K. Both microstructural and mechanical properties were examined.Usage Apply: The demand for reliable, light and stiff materials in structural applications has been led to increased demand for Mg alloys. More so Mg alloys are expected to be useful for minimizing global environmental problems. Through inducing high plastic strains, NTE produces high strength materials which can be applied load carrying structures. AZ31 with improved mechanical properties is promising in automotive, aircraft fuselages, cell phones, laptop cases, speaker cones, healthcare amongst others.
- Combined processing by shearing and rolling to improve ridging and formability of ferritic stainless steel sheetResearch Fields: Machinery and Measuring Equipment, Chemicals, Nanotechnology and MaterialsAffiliation/Name: Hiroyuki Miyamoto
