YUASA Motohiro
Faculty of Science and Engineering Department of Mechanical Engineering and Science
Associate Professor
Last Updated :2024/07/14

Researcher Profile and Settings

      Research funding number

      70635309

    Research Areas

    • Nanotechnology/Materials / Structural and functional materials

    Research Experience

    • Doshisha University, Faculty of Science and Engineering Department of Energy and Mechanical Engineering, 准教授, 2019/04 - Today
    • Doshisha University, Faculty of Science and Engineering, 助教, 2016/04 - 2019/03
    • National Institute of Advanced Industrial Science and Technology, サステナブルマテリアル研究部門, 研究員, 2012/04 - 2016/03
    • Northwestern University, Department of Materials Science and Engineering, Visiting scholar, 2014/05 - 2014/09

    Education

    • Kyoto University, エネルギー科学研究科, エネルギー応用科学専攻, - 2012
    • Kyoto University, エネルギー科学研究科, エネルギー応用科学専攻, - 2009
    • Kyoto University, Faculty of Engineering, School of Global Engineering, - 2007

    Degree

    • Ph. D, Kyoto University

    Association Memberships

    • The Japan Magnesium Association
    • The Japan Society for Technology of Plasticity
    • The Japan Institiute of Light Metals
    • The Japan Institiute of metals
    • 日本機械学会
    • 日本材料学会

    Committee Memberships

    • 若手の会幹事, 2017/04 - Today, 一般社団法人日本塑性加工学会 関西支部, Society
    • 講演会運営委員会 委員, 2020/06 - 2022/05, 一般社団法人日本塑性加工学会, Society
    • 会報誌編集委員会 委員, 2019/04 - 2022/03, 一般社団法人日本塑性加工学会, Society
    • 庶務幹事, 2017/04 - 2019/03, 公益財団法人日本材料学会 関西支部, Society
    • 常議員, 2016/04 - 2019/03, 公益社団法人日本材料学会 関西支部, Society
    • 新進部会スタッフ, 2013/04 - 2015/03, 一般社団法人日本塑性加工学会東海支部, Society

    Awards

    • 第55回論文賞
      Oct. 2021, 日本銅学会, 強ひずみ加工法による超微細結晶銅合金の組織形成過程に及ぼす積層欠陥エネルギーと固溶元素の影響
    • 第38回軽金属奨励賞
      Nov. 2020, 一般社団法人軽金属学会, マグネシウム合金の変形機構解析と高機能化
    • 優秀論文講演奨励賞
      Jun. 2019, 一般社団法人日本塑性加工学会, 非線形ねじり押出し法に供したAZ31合金の機械的性質
    • 支部長賞
      Mar. 2018, 公益社団法人 日本材料学会 関西支部
    • 奨励賞(力学特性部門)
      Sep. 2017, 公益財団法人日本金属学会
    • 優秀ポスター賞
      Sep. 2010, 社団法人日本金属学会

    Published Papers

    • Induced kink boundary in Mg-Y-Zn alloy by tube-shape forming
      Hidetoshi Somekawa; Motohiro Yuasa
      Materials Letters, Elsevier BV, 345 134484 - 134484, Aug. 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, 01 Apr. 2023, Scientific journal
    • Predominant factor for effectively forming kink boundaries in Mg–Y–Zn alloy through wrought-process
      Hidetoshi Somekawa; Motohiro Yuasa; Daisuke Ando; Yoshikazu Todaka
      Materials Science and Engineering A, 858, 14 Nov. 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
    • Kink bands strengthening of Mg-Y-Zn alloy via various wrought-processing
      Hidetoshi Somekawa; Yoshikazu Todaka; Daisuke Ando; Motohiro Yuasa
      Materials Letters, Elsevier BV, 304 130653 - 130653, Dec. 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
    • 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
    • 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, Elsevier BV, 792 139777 - 139777, 05 Aug. 2020, Scientific journal
    • Fabrication of dense ZrB2/B4C 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, Elsevier BV, 46(11) 18478 - 18486, Aug. 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
    • Numerical analysis of a new nonlinear twist extrusion process
      Tuncay Yalçinkaya; Ülke Şimşek; Hiroyuki Miyamoto; Motohiro Yuasa
      Metals, 9(5), May 2019, 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), 2019, Scientific journal
    • 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
    • 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, Elsevier {BV}, 458 612 - 618, 15 Nov. 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, MDPI AG, 8(3), 01 Mar. 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 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, Hindawi Limited, 2018, 2018, Scientific journal
    • 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, Japan Institute of Metals (JIM), 82(2) 52 - 57, 2018, Scientific journal
    • Recrystallization behavior and texture of high-purity niobium for SRF cavity
      Yuta Yamaguchi; Takumi Izumi; Takumi Izumi; Motohiro Yuasa; Hiroyuki Miyamoto; Masashi Yamanaka
      Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, 82(7) 262 - 268, 01 Jan. 2018, Scientific journal
    • 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, Hindawi Limited, 2018, 2018, Scientific journal
    • Effects of solution treatment on corrosion properties of Mg6mass%Al1mass%Zn2mass%Ca (AZX612) and Mg6mass%Al1mass%Zn (AZ61) alloys
      Motohiro Yuasa; Xinsheng Huang; Kazutaka Suzuki; Naobumi Saito; Yasumasa Chino
      Materials Transactions, JAPAN INST METALS, 59(7) 1173 - 1179, 01 Jan. 2018, Scientific journal
    • Fabrication and anisotropic electronic property for oriented Li1+x-yNb1-x-3yTix+4yO3 solid solution by slip casting in a high magnetic field
      Hiromi Nakano; Shohei Furuya; Motohiro Yuasa; Tohru S. Suzuki; Hitoshi Ohsato
      ADVANCED POWDER TECHNOLOGY, ELSEVIER SCIENCE BV, 28(9) 2373 - 2379, Sep. 2017, Scientific journal
    • Microstructure and mechanical properties of AZX912 magnesium alloy extruded at different temperatures
      Xinsheng Huang; Yasumasa Chino; Motohiro Yuasa; Hironori Ueda; Masashi Inoue; Futoshi Kido; Toshiharu Matsumoto
      MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, ELSEVIER SCIENCE SA, 679 162 - 171, 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, Hindawi Limited, 2017, 2017, Scientific journal
    • Effects of Measurement Conditions on Ignition Temperature of Magnesium Alloys
      Kazutaka Suzuki; Naobumi Saito; Xinsheng Huang; Motohiro Yuasa; Yasumasa Chino
      MATERIALS TRANSACTIONS, JAPAN INST METALS, 58(11) 1616 - 1623, 2017, Scientific journal
    • Stress Corrosion Cracking and Corrosion Resistance of Mg-6% Al-1% Zn-2% Ca Extruded Magnesium Alloys
      Motohiro Yuasa; Eitaro Yukutake; Xinsheng Huang; Kazutaka Suzuki; Naobumi Saito; Yasumasa Chino
      MATERIALS TRANSACTIONS, JAPAN INST METALS, 58(9) 1257 - 1263, 2017, Scientific journal
    • Deformation and recrystallization behavior of super high-purity niobium for SRF cavity
      Y. Yamaguchi; H. Doryo; M. Yuasa; H. Miyamoto; M. Yamanaka
      7TH INTERNATIONAL CONFERENCE ON NANOMATERIALS BY SEVERE PLASTIC DEFORMATION, IOP PUBLISHING LTD, 194, 2017, International conference proceedings
    • Improving hydro-formability of stainless steel tubes by tube channel pressing
      Y. Kitano; M. Yuasa; H. Miyamoto; M. H. Farshidi; E. Bagherpour
      7TH INTERNATIONAL CONFERENCE ON NANOMATERIALS BY SEVERE PLASTIC DEFORMATION, IOP PUBLISHING LTD, 194, 2017, International conference proceedings
    • Stress corrosion cracking and corrosion resistance of Mg-6%Al-1%Zn-2%Ca extruded magnesium alloys
      Motohiro Yuasa; Eitaro Yukutake; Xinsheng Huang; Kazutaka Suzuki; Naobumi Saito; Yasumasa Chino
      Keikinzoku/Journal of Japan Institute of Light Metals, Japan Institute of Light Metals, 66(5) 266 - 272, 2016, Scientific journal
    • Effects of measurement conditions on ignition temperature of magnesium alloys
      Kazutaka Suzuki; Naobumi Saito; Xinsheng Huang; Motohiro Yuasa; Yasumasa Chino
      Keikinzoku/Journal of Japan Institute of Light Metals, Japan Institute of Light Metals, 66(5) 273 - 279, 2016, Scientific journal
    • Effect of segregated Al on {10(1)over-bar2} and {10(1)over-bar1} twinning in Mg
      Naoki Miyazawa; Takashi Yoshida; Motohiro Yuasa; Yasumasa Chino; Mamoru Mabuchi
      JOURNAL OF MATERIALS RESEARCH, CAMBRIDGE UNIV PRESS, 30(23) 3629 - 3641, Dec. 2015, Scientific journal
    • Discharge properties of Mg-Al-Mn-Ca and Mg-Al-Mn alloys as anode materials for primary magnesium-air batteries
      Motohiro Yuasa; Xinsheng Huang; Kazutaka Suzuki; Mamoru Mabuchi; Yasumasa Chino
      JOURNAL OF POWER SOURCES, ELSEVIER SCIENCE BV, 297 449 - 456, Nov. 2015, Scientific journal
    • Discharge properties of Mg-Al-Mn-Ca and Mg-Al-Mn alloys as anode materials for primary magnesium-air batteries
      Motohiro Yuasa; Xinsheng Huang; Kazutaka Suzuki; Mamoru Mabuchi; Yasumasa Chino
      JOURNAL OF POWER SOURCES, ELSEVIER SCIENCE BV, 297 449 - 456, Nov. 2015, Scientific journal
    • Effect of segregated elements on the interactions between twin boundaries and screw dislocations in Mg
      Takashi Yoshida; Motohiro Yuasa; Mamoru Mabuchi; Yasumasa Chino
      JOURNAL OF APPLIED PHYSICS, AMER INST PHYSICS, 118(3), Jul. 2015, Scientific journal
    • Extraordinary diffusion in Co/Cu grain boundaries
      Hiromi Nakano; Motohiro Yuasa; Hiroyuki Miyamoto; Naoki Miyazawa; Mamoru Mabuchi
      SCRIPTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, 101 52 - 55, May 2015, Scientific journal
    • Anomalous mechanical characteristics of Au/Cu nanocomposite processed by Cu electroplating
      Masataka Hakamada; Motohiro Yuasa; Mamoru Mabuchi
      PHILOSOPHICAL MAGAZINE, TAYLOR & FRANCIS LTD, 95(14) 1499 - 1510, May 2015, Scientific journal
    • First-principles Study of Hydrogen-induced Embrittlement in Fe Grain Boundary with Cr Segregation
      Motohiro Yuasa; Masataka Hakamada; Yasumasa Chino; Mamoru Mabuchi
      ISIJ INTERNATIONAL, IRON STEEL INST JAPAN KEIDANREN KAIKAN, 55(5) 1131 - 1134, 2015, Scientific journal
    • Enhanced Room-Temperature Stretch Formability of Mg-0.2 mass%Ce Alloy Sheets Processed by Combination of High-Temperature Pre-Annealing and Warm Rolling
      Kazutaka Suzuki; Yasumasa Chino; Xinsheng Huang; Motohiro Yuasa; Mamoru Mabuchi
      MATERIALS TRANSACTIONS, JAPAN INST METALS, 56(7) 1096 - 1101, 2015, Scientific journal
    • Effects of group II elements on the cold stretch formability of Mg-Zn alloys
      Motohiro Yuasa; Naoki Miyazawa; Makoto Hayashi; Mamoru Mabuchi; Yasumasa Chino
      ACTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, 83 294 - 303, Jan. 2015, Scientific journal
    • {10(1)over-bar2} twins in the rolled Mg-Zn-Ca alloy with high formability
      Hiromi Nakano; Motohiro Yuasa; Yasumasa Chino; Mamoru Mabuchi
      JOURNAL OF MATERIALS RESEARCH, CAMBRIDGE UNIV PRESS, 29(24) 3024 - 3031, Dec. 2014, Scientific journal
    • Mechanical and chemical effects of solute elements on generalized stacking fault energy of Mg
      Motohiro Yuasa; Yasumasa Chino; Mamoru Mabuchi
      JOURNAL OF MATERIALS RESEARCH, CAMBRIDGE UNIV PRESS, 29(21) 2576 - 2586, Nov. 2014, Scientific journal
    • Texture Formation and Room-Temperature Formability of Rolled Mg-Zn-Ce Alloys
      Yasumasa Chino; Xinsheng Huang; Kazutaka Suzuki; Motohiro Yuasa; Mamoru Mabuchi
      MATERIALS TRANSACTIONS, JAPAN INST METALS, 55(8) 1190 - 1195, Aug. 2014, Scientific journal
    • Effects of Microstructure on Discharge Behavior of AZ91 Alloy as Anode for Mg-Air Battery
      Motohiro Yuasa; Xinsheng Huang; Kazutaka Suzuki; Mamoru Mabuchi; Yasumasa Chino
      MATERIALS TRANSACTIONS, JAPAN INST METALS, 55(8) 1202 - 1207, Aug. 2014, Scientific journal
    • Microstructural and textural evolution of pure titanium during differential speed rolling and subsequent annealing
      Xinsheng Huang; Kazutaka Suzuki; Motohiro Yuasa; Yasumasa Chino
      JOURNAL OF MATERIALS SCIENCE, SPRINGER, 49(8) 3166 - 3176, Apr. 2014, Scientific journal
    • Visible-light photocatalysis of ZnO deposited on nanoporous Au
      Masataka Hakamada; Motohiro Yuasa; Takashi Yoshida; Fumi Hirashima; Mamoru Mabuchi
      APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, SPRINGER, 114(4) 1061 - 1066, Mar. 2014, Scientific journal
    • Improved plastic anisotropy of Mg-Zn-Ca alloys exhibiting high-stretch formability: A first-principles study
      Motohiro Yuasa; Makoto Hayashi; Mamoru Mabuchi; Yasumasa Chino
      ACTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, 65 207 - 214, Feb. 2014, Scientific journal
    • Interaction mechanisms of screw dislocations with {10(1)over-bar1} and {10(1)over-bar2} twin boundaries in Mg
      Motohiro Yuasa; Kohei Masunaga; Mamoru Mabuchi; Yasumasa Chino
      PHILOSOPHICAL MAGAZINE, TAYLOR & FRANCIS LTD, 94(3) 285 - 305, Jan. 2014, Scientific journal
    • Atomic simulations of (10(1)over-bar2), (10(1)over-bar1) twinning and (10(1)over-bar2) detwinning in magnesium
      Motohiro Yuasa; Makoto Hayashi; Mamoru Mabuchi; Yasumasa Chino
      JOURNAL OF PHYSICS-CONDENSED MATTER, IOP PUBLISHING LTD, 26(1), Jan. 2014, Scientific journal
    • Molecular dynamics and first-principles study of grain boundary sliding in metals
      Motohiro Yuasa; Yasumasa Chino; Mamoru Mabuchi
      Trans. Met. Res. Soc. Japan, The Materials Research Society of Japan, 39(1) 31 - 34, 2014, International conference proceedings
    • Effects of initial microstructure on the microstructural evolution and stretch formability of warm rolled Mg-3Al-1Zn alloy sheets
      Xinsheng Huang; Kazutaka Suzuki; Motohiro Yuasa; Yasumasa Chino
      MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, ELSEVIER SCIENCE SA, 587 150 - 160, Dec. 2013, Scientific journal
    • Softening due to disordered grain boundaries in nanocrystalline Co
      Motohiro Yuasa; Masataka Hakamada; Hiromi Nakano; Mamoru Mabuchi; Yasumasa Chino
      JOURNAL OF PHYSICS-CONDENSED MATTER, IOP PUBLISHING LTD, 25(34), Aug. 2013, Scientific journal
    • Interactions of a screw dislocation with a {10(1)over-bar1}-{10(1)over-bar2} double twin in Mg
      Motohiro Yuasa; Kohei Masunaga; Takashi Yoshida; Mamoru Mabuchi; Yasumasa Chino
      ACTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, 61(13) 4714 - 4725, Aug. 2013, Scientific journal
    • First-principles study in Fe grain boundary with Al segregation: variation in electronic structures with straining
      Motohiro Yuasa; Mamoru Mabuchi
      PHILOSOPHICAL MAGAZINE, TAYLOR & FRANCIS LTD, 93(6) 635 - 647, Feb. 2013, Scientific journal
    • Microstructure and Mechanical Properties of Nanostructured Co-Cu Alloy Films Processed by Electrodeposition
      M. Yuasa; H. Nakano; M. Mabuchi
      15TH INTERNATIONAL CONFERENCE ON THIN FILMS (ICTF-15), IOP PUBLISHING LTD, 417(1), 2013, International conference proceedings
    • Atomic simulations of GB sliding in pure and segregated bicrystals
      Motohiro Yuasa; Yasumasa Chino; Mamoru Mabuchi
      Materials Research Society Symposium Proceedings, Materials Research Society, 1515 13 - 18, 2013, International conference proceedings
    • Enhancement of room temperature stretch formability of Mg-1.5 mass%Mn alloy by texture control
      K. Suzuki; Y. Chino; X. Huang; M. Yuasa; M. Mabuchi
      Materials Transactions, JAPAN INST METALS, 54(3) 392 - 398, 2013, Scientific journal
    • Grain boundary sliding in pure and segregated bicrystals: a molecular dynamics and first principles study
      Motohiro Yuasa; Takumi Nakazawa; Mamoru Mabuchi
      JOURNAL OF PHYSICS-CONDENSED MATTER, IOP PUBLISHING LTD, 24(26), Jul. 2012, Scientific journal
    • Enhanced grain boundary embrittlement of an Fe grain boundary segregated by hydrogen (H)
      Motohiro Yuasa; Takashi Amemiya; Mamoru Mabuchi
      JOURNAL OF MATERIALS RESEARCH, CAMBRIDGE UNIV PRESS, 27(12) 1589 - 1597, Jun. 2012, Scientific journal
    • Hydrogen embrittlement in a magnesium grain boundary: a first-principles study
      Motohiro Yuasa; Daiki Nishihara; Mamoru Mabuchi; Yasumasa Chino
      JOURNAL OF PHYSICS-CONDENSED MATTER, IOP PUBLISHING LTD, 24(8), Feb. 2012, Scientific journal
    • Grain boundary embrittlement of Fe induced by P segregation: First-principles tensile tests
      Motohiro Yuasa; Mamoru Mabuchi
      Advanced Materials Research, 409 455 - 460, 2012, International conference proceedings
    • Rapid synthesis and structural analysis of Li-Nb-Ti-O solid solutions with superstructure by millimeter-wave heating
      Hiromi Nakano; Tasaburo Saji; Motohiro Yuasa; Syoji Miyake; Mamoru Mabuchi
      JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, CERAMIC SOC JAPAN-NIPPON SERAMIKKUSU KYOKAI, 119(1395) 808 - 812, Nov. 2011, Scientific journal
    • First-Principles Study on Enhanced Grain Boundary Embrittlement of Iron by Phosphorus Segregation
      Motohiro Yuasa; Mamoru Mabuchi
      MATERIALS TRANSACTIONS, JAPAN INST METALS, 52(7) 1369 - 1373, Jul. 2011, Scientific journal
    • Effects of segregated Cu on an Fe grain boundary by first-principles tensile tests
      Motohiro Yuasa; Mamoru Mabuchi
      JOURNAL OF PHYSICS-CONDENSED MATTER, IOP PUBLISHING LTD, 22(50), Dec. 2010, Scientific journal
    • Atomic simulations of dislocation emission from Cu/Cu and Co/Cu grain boundaries
      Motohiro Yuasa; Takumi Nakazawa; Mamoru Mabuchi
      MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, ELSEVIER SCIENCE SA, 528(1) 260 - 267, Nov. 2010, Scientific journal
    • Bond mobility mechanism in grain boundary embrittlement: First-principles tensile tests of Fe with a P-segregated Sigma 3 grain boundary
      Motohiro Yuasa; Mamoru Mabuchi
      PHYSICAL REVIEW B, AMER PHYSICAL SOC, 82(9), Sep. 2010, Scientific journal
    • Deformation behavior of an ultrafine grained two phase Co-Cu alloy processed by electrodeposition
      Motohiro Yuasa; Kota Kajikawa; Takumi Nakazawa; Masataka Hakamada; Mamoru Mabuchi
      SCRIPTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, 63(1) 132 - 135, Jul. 2010, Scientific journal
    • Atomic simulation of grain boundary sliding in Co/Cu two-phase bicrystals
      Motohiro Yuasa; Takumi Nakazawa; Mamoru Mabuchi
      MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, ELSEVIER SCIENCE SA, 527(10-11) 2629 - 2636, Apr. 2010, Scientific journal
    • Development of Nanocrystalline Co-Cu Alloys for Energy Applications
      Motohiro Yuasa; Hiromi Nakano; Mamoru Mabuchi
      Green Energy and Technology, 44 191 - 194, 2010, Scientific journal
    • Deformation behavior of nanocrystalline Co-Cu alloys
      Yuasa M; Nakano H; Kajikawa K; Nakazawa T; Mabuchi M
      Materials Research Society Symposium Proceedings, 1224 9 - 14, 2010
    • Saturation magnetization in supersaturated solid solution of Co-Cu alloy
      Motohiro Yuasa; Kota Kajikawa; Masataka Hakamada; Mamoru Mabuchi
      APPLIED PHYSICS LETTERS, AMER INST PHYSICS, 95(16), Oct. 2009, Scientific journal
    • Changes in the grain boundaries of a nanolamellar structured Co-Cu alloy by annealing
      Hiromi Nakano; Motohiro Yuasa; Mamoru Mabuchi
      SCRIPTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, 61(4) 371 - 374, Aug. 2009, Scientific journal
    • Effect of Annealing on Mechanical Properties and Nanoscale Lamellar Structure in Co-Cu Alloy
      Motohiro Yuasa; Hiromi Nakano; Yoshiaki Nakamoto; Mamoru Mabuchi
      MATERIALS TRANSACTIONS, JAPAN INST METALS, 50(3) 570 - 578, Mar. 2009, Scientific journal
    • Ferromagnetic Properties of Co-Cu Alloy with Nanoscale Lamellar Structure
      Motohiro Yuasa; Hiromi Nakano; Yoshiaki Nakamoto; Masataka Hakamada; Mamoru Mabuchi
      MATERIALS TRANSACTIONS, JAPAN INST METALS, 50(2) 419 - 422, Feb. 2009, Scientific journal
    • Mechanical properties of nanocrystalline Co-Cu alloy with a nanoscale multilayer structure
      Yuasa M; Nakano H; Nakamoto Y; Kajikawa K; Kusuda H; Chen Y; Mabuchi M
      The Minerals, Metals and Materials Society - 3rd International Conference on Processing Materials for Properties 2008, PMP III, 1 143 - 148, 2009
    • A superelastic nanocrystalline Cu-Sn alloy thin film processed by electroplating
      Motohiro Yuasa; Kota Kaiikawa; Masataka Hakamada; Mamoru Mabuchi
      MATERIALS LETTERS, ELSEVIER SCIENCE BV, 62(29) 4473 - 4475, Nov. 2008, Scientific journal
    • Effects of Vacancies on Deformation Behavior in Nanocrystalline Nickel
      Motohiro Yuasa; Hiroshi Matsumoto; Masataka Hakamada; Mamoru Mabuchi
      MATERIALS TRANSACTIONS, JAPAN INST METALS, 49(10) 2315 - 2321, Oct. 2008, Scientific journal
    • Mechanical properties of a nanocrystalline Co-Cu alloy with a high-density fine nanoscale lamellar structure
      Yoshiaki Nakamoto; Motohiro Yuasa; Youqing Chen; Hiromu Kusuda; Mamoru Mabuchi
      SCRIPTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, 58(9) 731 - 734, May 2008, Scientific journal

    MISC

    • 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
    • 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
    • OS0116 Relationship between grain boundary energy and free volume in magnesium : first-principles study
      MIYAZAWA Naoki; YUASA Motohiro; HAKAMADA Masataka; MABUCHI Mamoru; CHINO Yasumasa
      M&M材料力学カンファレンス, The Japan Society of Mechanical Engineers, 2014 "OS0116 - 1"-"OS0116-3", 19 Jul. 2014
    • OS0422 Effects of alloying elements on mechanical properties of Mg-Zn-Ca alloy : A first principle study
      HAYASHI Makoto; YUASA Motohiro; MABUCHI Mamoru; CHINO Yasumasa
      M&M材料力学カンファレンス, The Japan Society of Mechanical Engineers, 2013 "OS0422 - 1"-"OS0422-3", 12 Oct. 2013
    • OS0301 Mechanical Properties and Room Temperature Formability of Rolled Mg-Zn-Ca Series Alloys
      CHINO Yasumasa; HUANG Xinsheng; SUZUKI Kazutaka; YUASA Motohiro; MABUCHI Mamoru
      M&M材料力学カンファレンス, The Japan Society of Mechanical Engineers, 2012 "OS0301 - 1"-"OS0301-2", 22 Sep. 2012

    Industrial Property Rights

    • Patent right
      一次電池負極用合金
      松本敏治, 城戸太司, 千野靖正, 湯浅元仁, 久保田昌明, 小出彩乃, 井上正士, 上田祐規
      特願2015-005269, 特開2016-131114
    • Patent right
      炭化水素の製造方法(合金系)
      水野恒, 吉村篤軌, 千野靖正, 湯浅元仁
      特願2014-065398, 特開2015-038056, 特許6101229

    Research Projects

    • Control of cell adhesion by nanoporous gold
      HAKAMADA Masataka
      We investigated the activity of cells on nanoporous gold (NPG) with nanometer-sized pores and ligaments. HeLa cells were inactivated by NPG substrates after initial temporary adsorption because of the conformational deterioration of fibronectin, which is an important protein for the adsorption of HeLa cells. On the other hand, human mesenchymal stem cells (hMSCs) were not adsorbed on NPG substrates, which may be due to local conformational change in collagen, which mediates the adsorption of hMSCs. Furthermore, cyclic stretching by the actuation of NPG significantly enhanced the proliferation of human embryo-derived fibroblasts., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), 2019/04 -2022/03, Grant-in-Aid for Scientific Research (B), Kyoto 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
    • 強ひずみ加工組織制御によるマグネシウム合金の腐食メカニズムの解明と高耐食化
      湯浅 元仁
      科学研究費補助金(若手研究(B)), 2017/04 -2019/03, Principal investigator, Competitive research funding
    • 強ひずみ加工法による電極用マグネシウムの電気化学特性の活性化
      湯浅 元仁
      池谷科学技術振興財団研究調査助成, 2017/04 -2018/03, Principal investigator, Competitive research funding
    • 電子状態計算に基づく高加工性マグネシウム合金設計指針の構築
      科学研究費補助金 若手研究(B), 2015 -2017, Competitive research funding
    • 第一原理計算を利用したCNT/金属異相界面の破壊メカニズムの解明
      科学研究費補助金(研究活動スタート支援), 2012 -2014, Competitive research funding