JA

Profile

Research

Social

Other

Hagihara Kouji

萩原 幸司

Graduate School of Engineering Division of Materials and Manufacturing Science, Specially Appointed Professor

hagihara nitech.ac.jp

Education

  • - 2002, Osaka University, Graduate School, Division of Engineering
  • - 2002, Osaka University, Graduate School, Division of Engineering
  • - 2002, Osaka University, Graduate School, Division of Engineering

Research History

  • 2021/04/01 - Present, Nagoya Institute of Technology, Graduate School of Engineering Shikumi College, Professor
  • 2021/04 - Present, Osaka University, Graduate School of Engineering
  • 2021/04 - Present, Nagoya Institute of Technology, Department of Physical Science and Engineering, Professor
  • 2015/01 - Present, 大阪大学工学研究科附属 異方性カスタム設計・ AM(Additive Manufacturing)研究開発センター 准教授(兼任)
  • 2019/04 - 2021/03, 大阪大学大学院工学研究科, マテリアル生産科学専攻, 准教授
  • 2010/05 - 2020/03, Osaka University, Graduate School of Engineering, Department of Adaptive Machine Systems
  • 2002/06 - 2010/05, 大阪大学大学院工学研究科 マテリアル科学専攻 助手(助教)
  • 2002/04 - 2002/05, 日本学術振興会(PD)
  • 2002/03 - , 大阪大学大学院工学研究科マテリアル科学専攻 博士後期課程修了

Research Areas

  • Nanotechnology/Materials, Structural and functional materials

Professional Memberships

  • 日本マグネシウム協会
  • THE JAPAN SOCIETY OF MECHANICAL ENGINEERS
  • THE JAPAN INSTITUTE OF LIGHT METALS
  • THE JAPANESE SOCIETY FOR BIOMATERIALS
  • 日本鉄鋼協会
  • 日本金属学会

Papers

  • Orientation dependence of the wear resistance in the Co–Cr–Mo single crystal, Takayoshi Nakano,Koji Hagihara,Ana R. Ribeiro,Yusuke Fujii,Tsubasa Todo,Ryo Fukushima,Luís Augusto Rocha, Wear, Vol. 478-479, 2021/08/15
  • Stability of crystallographic texture in laser powder bed fusion: Understanding the competition of crystal growth using a single crystalline seed, Takuya Ishimoto,Koji Hagihara,Kenta Hisamoto,Takayoshi Nakano, Additive Manufacturing, Elsevier BV, Vol. 43, p. 102004-102004, 2021/07
  • Formation of <0001>-rotation-type kink boundary in Mg–Zn–Y alloy with long-period stacking ordered structure, Michiaki Yamasaki,Tsuyoshi Mayama,Tsubasa Matsumoto,Koji Hagihara,Daria Drozdenko,Yoshihito Kawamura, Materials Science and Engineering: A, Elsevier BV, Vol. 819, p. 141466-141466, 2021/07
  • Ultrahigh specific strength in a magnesium alloy strengthened by spinodal decomposition, Tongzheng Xin,Yuhong Zhao,Reza Mahjoub,Jiaxi Jiang,Apurv Yadav,Keita Nomoto,Ranming Niu,Song Tang,Fan Ji,Zakaria Quadir,David Miskovic,John Daniels,Wanqiang Xu,Xiaozhou Liao,Long-Qing Chen,Koji Hagihara,Xiaoyan Li,Simon Ringer,Michael Ferry, Science Advances, American Association for the Advancement of Science (AAAS), Vol. 7, No. 23, p. eabf3039-eabf3039, 2021/06
  • Surprising increase in yield stress of Mg single crystal using long-period stacking ordered nanoplates, Koji Hagihara,Ryohei Ueyama,Michiaki Yamasaki,Yoshihito Kawamura,Takayoshi Nakano, Acta Materialia, Elsevier BV, Vol. 209, 2021/05
  • Kink-band formation in directionally solidified Mg/Mg2Yb and Mg/Mg2Ca eutectic alloys with Mg/Laves-phase lamellar microstructure, Koji Hagihara,Kosuke Miyoshi, Journal of Magnesium and Alloys, Elsevier BV, 2021/04
  • Inducement of kink-band formation in directionally solidified Mg/Mg17Al12 eutectic alloy - Inspired by the deformation behavior of the long-period stacking ordered (LPSO) phase, K. Hagihara,K. Hayakawa,K. Miyoshi, Materials Science & Engineering A, Vol. 798, 2020/09
  • Morphology and mechanical properties of the T-Al6Mg11Zn11 phase in the eutectic microstructure of Al–Zn–Mg ternary alloys, N. Takata,T. Okano,M. Aikawa,A.Suzuki,M. Kobashi,K. Hagihara, Intermetallics, Vol. 124, 2020/07
  • Kink formation process in long-period stacking ordered Mg-Zn-Y alloy, S. Yamasaki,T. Tokuzumi,W. Li,M. Mitsuhara,H. Nakashima,K. Hagihara,T. Fujii, Acta Materialia, Vol. 195, p. 25-34, 2020/06
  • Loading orientation dependence of the formation behavior of deformation kink bands in the Mg-based long-period stacking ordered (LPSO) phase, Koji Hagihara,Takuya Okamoto,Ryohei Ueyama,Michiaki Yamasaki,Yoshihito Kawamura,Takayoshi Nakano, Materials Transactions, Vol. 61, No. 5, p. 1821-1827, 2020
  • Enhancement of plastic anisotropy and drastic increase in yield stress of Mg-Li single crystals by Al-addition followed by quenching, K. Hagihara,K. Mori,T. Nakano, Scripta Materialia, 2019/07
  • Strengthening of Mg-based long-period stacking ordered (LPSO) phase with deformation kink bands, K. Hagihara,M. Yamasaki,Y. Kawamura,T. Nakano, Materials Science & Engineering A, Vol. 763, 2019/07
  • Fabrication of the beta-titanium alloy rods from a mixture of pure?metallic element powders via selected laser melting, M. Todai,T. Nagase,T. Hori,H. Motoki,S.-H. Sun,K. Hagihara,T. Nakano, Materials Science Forum, Vol. 941, p. 1260-1263, 2019/07
  • Quantitative ultrasound (QUS) axial transmission method reflects anisotropy in micro-arrangement of apatite crystallites in human long bones: A study with 3-MHz-frequency ultrasound, T. Ishimoto,R. Suetoshi,D. Cretin,K. Hagihara,J. Hashimoto,A. Kobayashi,T. Nakano, Bone, Vol. 127, p. 82-90, 2019/07
  • Additive Manufacturing プロセスによるシリサイド金属間化合物の結晶方位・組織制御, 萩原幸司,石本卓也,孫世海,中野貴由, スマートプロセス学会誌, Vol. 8, p. 84-89, 2019/04
  • Cr, Ir 共添加によるC40/C11b超高温耐熱複相シリサイドの格子ラメラ組織制御, 萩原幸司,池西貴昭,中野貴由, 日本金属学会誌まてりあ, Vol. 58, 2019/02
  • Mg 基LPSO 相をはじめとする種々の異方性材料に見られる特異な変形帯形成, 萩原幸司,中野貴由,山崎倫昭,河村能人, 日本金属学会誌まてりあ, Vol. 57, 2018/11
  • Strengthening mechanisms acting in extruded Mg-based long-period stacking ordered (LPSO)-phase alloys, K. Hagihara,Z.Li,M. Yamasaki,Y. Kawamura,T. Nakano, Acta Materialia, Vol. 15, p. 226-239, 2018/10
  • In-plane positional correlations among dopants in 10H type long period stacking ordered Mg75Zn10Y15 alloy studied by X-ray fluorescence holography, T. Nishioka,Y. Yamamoto,K. Kimura,K. Hagihara,H. Izuno,N. Happo,S. Hosokawa,E. Abe,M. Suzuki,T. Matsushita,K. Hayashi, Materialia, Vol. 3, p. 256-259, 2018/09
  • Excellent mechanical and corrosion properties of austenitic stainless steel with a unique crystallographic lamellar microstructure via selective laser melting, S.-H. Sun,T. Ishimoto,K. Hagihara,Y. Tsutsumi,T. Hanawa,T. Nakano, Scripta Materialia, Vol. 159, p. 89-93, 2018/09
  • Plastic deformation behavior and operative slip systems in Mg17Al12 single crystals, K. Hagihara,K. Hayakawa, Materials Science & Engineering A, Vol. 737, p. 393-400, 2018/09
  • Elastic-modulus enhancement during room-temperature aging in β-Ti alloys, M. Tane,A. Umeda,K. Hagihara,M. Ueda,T. Nakano,T.Sekino,T. Ichitsubo, 2018/07
  • Configuration of dislocations in low-angle kink boundaries formed in a single crystalline long-period stacking ordered Mg-Zn-Y alloy, Tsubasa Matsumoto,Michiaki Yamasaki,Koji Hagihara,Yoshihito Kawamura, Acta Materialia, Acta Materialia Inc, Vol. 151, p. 112-124, 2018/06/01
  • C40/C11b超高温耐熱複相シリサイド合金における特異な「cross-lamellar microstructure」の発達, 萩原幸司,池西貴昭,中野貴由, 日本金属学会誌まてりあ, Vol. 57, 2018/05
  • 金属積層造形法における形状・組織制御による異方性付与, 萩原幸司,石本卓也,中野貴由, 日本金属学会誌まてりあ, Vol. 57, p. 145-149, 2018/04
  • チタン単結晶の塑性変形機構, 萩原幸司, 軽金属, Vol. 68, p. 172-180, 2018/04
  • Strain-rate dependence of deformation behavior of LPSO-phases, Koji Hagihara,Zixuan Li,Michiaki Yamasaki,Yoshihito Kawamura,Takayoshi Nakano, Materials Letters, Elsevier B.V., Vol. 214, p. 119-122, 2018/03/01
  • Phonon excitations in a single crystal Mg<inf>85</inf>Zn<inf>6</inf>Y<inf>9</inf> with a synchronized long-period stacking ordered phase, Shinya Hosokawa,Koji Kimura,Jens Rüdiger Stellhorn,Koji Yoshida,Koji Hagihara,Hitoshi Izuno,Michiaki Yamasaki,Yoshihito Kawamura,Yoji Mine,Kazuki Takashima,Hiroshi Uchiyama,Satoshi Tsutsui,Akihide Koura,Fuyuki Shimojo, Acta Materialia, Vol. 146, p. 273-279, 2018/03
  • Effect of scanning strategy on texture formation in Ni-25 at.%Mo alloys fabricated by selective laser melting, Shi-Hai Sun,Koji Hagihara,Takayoshi Nakano, Materials and Design, Elsevier Ltd, Vol. 140, p. 307-316, 2018/02/15
  • Insignificant elastic-modulus mismatch and stress partitioning in two-phase Mg–Zn–Y alloys comprised of α-Mg and long-period stacking ordered phases, Masakazu Tane,Shogo Suzuki,Michiaki Yamasaki,Yoshihito Kawamura,Koji Hagihara,Hajime Kimizuka, Materials Science and Engineering A, Elsevier Ltd, Vol. 710, p. 227-239, 2018/01/05
  • Plastic deformation mechanisms of biomedical Co-Cr-Mo alloy single crystals with hexagonal close-packed structure, Wataru Kaita,Koji Hagihara,Luis Augusto Rocha,Takayoshi Nakano, SCRIPTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 142, p. 111-115, 2018/01
  • Experimental clarification of the cyclic deformation mechanisms of beta-type Ti-Nb-Ta-Zr-alloy single crystals developed for the single-crystalline implant, Koji Hagihara,Takayoshi Nakano, INTERNATIONAL JOURNAL OF PLASTICITY, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 98, p. 27-44, 2017/11
  • 1400℃でも使用可能な超高温耐熱材料を開発, 萩原幸司,中野貴由, Ceramics Japan, Vol. 52, 2017/09
  • 「高機能性構造材料」としてのマグネシウム合金開発, 萩原幸司, 軽金属, Vol. 67, p. 293-300, 2017/08
  • Unusual dynamic precipitation softening induced by dislocation glide in biomedical beta-titanium alloys, K. Hagihara,T. Nakano,M. Todai, Scientific Reports, Vol. 7, 2017/07
  • Control of morphological and microstructural anisotropy through powder-based metal additive manufacturing, Takayoshi Nakano,Takuya Ishimoto,Koji Hagihara, Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 64, No. 6, p. 259-264, 2017/06/01
  • Outstanding compressive creep strength in Cr/Ir-codoped (Mo0.85Nb0.15)Si2 crystals with the unique cross-lamellar microstructure, K. Hagihara,T. Ikenishi,H. Araki,T. Nakano, Scientific Reports, Vol. 7, 2017/05
  • Development of unique cross-lamellar microstructure, resulting in the drastic increase in fracture toughness in Cr/Ir-codoped (Mo0.85Nb0.15)Si-2 crystals, Koji Hagihara,Takaaki Ikenishi,Takayoshi Nakano, SCRIPTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 131, p. 19-23, 2017/04
  • Crystallographic texture control of beta-type Ti-15Mo-5Zr-3Al alloy by selective laser melting for the development of novel implants with a biocompatible low Young's modulus, Takuya Ishimoto,Koji Hagihara,Kenta Hisamoto,Shi-Hai Sun,Takayoshi Nakano, SCRIPTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 132, p. 34-38, 2017/04
  • In-Plane Positional Fluctuations of Zinc Atoms in Single Crystal Mg<SUB>85</SUB>Zn<SUB>6</SUB>Y<SUB>9</SUB> Alloy Studied by X-ray Fluorescence Holography, K. Kimura,K. Hayashi,K. Hagihara,H. Izuno,N. Happo,S. Hosokawa,M. Suzuki,H. Tajiri, Materials Transactions, Vol. 58, p. 539-542, 2017/03/25
  • Successful additive manufacturing of MoSi2 including crystallographic texture and shape control, Koji Hagihara,Takayoshi Nakano,Masahiro Suzuki,Takuya Ishimoto,Suyalatu,Shi-Hai Sun, JOURNAL OF ALLOYS AND COMPOUNDS, ELSEVIER SCIENCE SA, Vol. 696, No. 696, p. 67-72, 2017/03
  • In-Plane Positional Fluctuations of Zinc Atoms in Single Crystal Mg85Zn6Y9 Alloy Studied by X-ray Fluorescence Holography, Koji Kimura,Kouichi Hayashi,Koji Hagihara,Hitoshi Izuno,Naohisa Happo,Shinya Hosokawa,Motohiro Suzuki,Hiroo Tajiri, MATERIALS TRANSACTIONS, JAPAN INST METALS, Vol. 58, No. 4, p. 539-542, 2017
  • Effect of building direction on the microstructure and tensile properties of Ti-48Al-2Cr-2Nb alloy additively manufactured by electron beam melting, Mitsuharu Todai,Takayoshi Nakano,Tianqi Liu,Hiroyuki Y. Yasuda,Koji Hagihara,Ken Cho,Minoru Ueda,Masao Takeyama, Additive Manufacturing, Elsevier B.V., Vol. 13, p. 61-70, 2017/01/01
  • Anomalous strengthening behavior of Co-Cr-Mo alloy single crystals for biomedical applications, Koji Hagihara,Takayoshi Nakano,Keita Sasaki, SCRIPTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 123, p. 149-153, 2016/10
  • Crystal-orientation-dependent corrosion behaviour of single crystals of a pure Mg and Mg-Al and Mg-Cu solid solutions, Koji Hagihara,Masayoshi Okubo,Michiaki Yamasaki,Takayoshi Nakano, CORROSION SCIENCE, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 109, p. 68-85, 2016/08
  • Effect of additional elements on fracture toughness of (Mo0.85Nb0.15)Si-2 C40/C11(b) lamellar-structured crystals, Koji Hagihara,Koretaka Yuge,Takaaki Ikenishi,Haruka Araki,Takayoshi Nakano, MATERIALS LETTERS, ELSEVIER SCIENCE BV, Vol. 177, p. 99-103, 2016/08
  • Plastic deformation behavior of the Mg-based LPSO phases with various crystal structures, K. Hagihara,T. Okamoto,H. Izuno,M. Yamasaki,M. Matsushita,T. Nakano,Y. Kawamura, Proceedings of PRICM9, p. 27-31, 2016/08
  • Isotropic plasticity of beta-type Ti-29Nb-13Ta-4.6Zr alloy single crystals for the development of single crystalline beta-Ti implants, Koji Hagihara,Takayoshi Nakano,Hideaki Maki,Yukichi Umakoshi,Mitsuo Niinomi, SCIENTIFIC REPORTS, NATURE PUBLISHING GROUP, Vol. 6, 2016/07
  • シンクロ型LPSO構造の力学的性質とキンク変形挙動, 萩原幸司,森川龍哉,東田賢二, 金属 (雑誌), Vol. 86, p. 472-479, 2016/06
  • Plastic deformation behavior of 10H-type synchronized LPSO phase in a Mg-Zn-Y system, Koji Hagihara,Takuya Okamoto,Hitoshi Izuno,Michiaki Yamasaki,Masafumi Matsushita,Takayoshi Nakano,Yoshihito Kawamura, ACTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 109, p. 90-102, 2016/05
  • Electron backscatter diffraction pattern analysis of the deformation band formed in the Mg-based long-period stacking ordered phase, Koji Hagihara,Takuya Okamoto,Michiaki Yamasaki,Yoshihito Kawamura,Takayoshi Nakano, SCRIPTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 117, p. 32-36, 2016/05
  • Creep-deformation behavior of (Mo0.85Nb0.15)Si-2 lamellar-structured C40/C11(b) two-phase crystals, Koji Hagihara,Haruka Araki,Takaaki Ikenishi,Takayoshi Nakano, ACTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 107, p. 196-212, 2016/04
  • High-temperature deformation behavior of (Mo0.85Nb0.15)Si2 crystals with C40/C11b lamellar microstructure, K. Hagihara,H. Araki,T. Ikenishi,T. Nakano, Materials Science Forum, Vol. 879, p. 677-683, 2016/04
  • Microstructure and fracture toughness in boron added NbSi2(C40)/MoSi2(C11(b)) duplex crystals, Mitsuharu Todai,Koji Hagihara,Kyosuke Kishida,Haruyuki Inui,Takayoshi Nakano, SCRIPTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 113, p. 236-240, 2016/03
  • Orientation dependence of the deformation kink band formation behavior in Zn single crystal, Koji Hagihara,Tsuyoshi Mayama,Masahito Honnami,Michiaki Yamasaki,Hitoshi Izuno,Takuya Okamoto,Tetsuya Ohashi,Takayoshi Nakano,Yoshihito Kawamura, INTERNATIONAL JOURNAL OF PLASTICITY, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 77, p. 174-191, 2016/02
  • Elastic-modulus enhancement during room-temperature aging and its suppression in metastable Ti-Nb-Based alloys with low body-centered cubic phase stability, M. Tane,K. Hagihara,M. Ueda,T. Nakano,Y. Okuda, ACTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 102, p. 373-384, 2016/01
  • Experimental and computational approaches for the understanding of the nature of deformation band formed in materials with hexagonal crystal structures, HAGIHARA Koji,MAYAMA Tsuyoshi,YAMASAKI Michiaki,OHASHI Tetsuya,KAWAMURA Yoshihito,NAKANO Takayoshi, The Proceedings of the Materials and Mechanics Conference, The Japan Society of Mechanical Engineers, Vol. 2016, No. 0, p. OS01-11, 2016
  • Mechanisms of lamellar structure formation and Cr interfacial segregation in C11(b)-MoSi2/C40-NbSi2 dual phase silicide verified by a phase-field simulation incorporating elastic inhomogeneity, Toshihiro Yamazaki,Yuichiro Koizumi,Koretaka Yuge,Akihiko Chiba,Koji Hagihara,Takayoshi Nakano,Kyosuke Kishida,Haruyuki Inui, COMPUTATIONAL MATERIALS SCIENCE, ELSEVIER SCIENCE BV, Vol. 108, p. 358-366, 2015/10
  • シンクロ型LPSO構造相の塑性変形挙動, 萩原幸司,東田賢二, 日本金属学会誌まてりあ, Vol. 54, p. 60-64, 2015/10
  • Effects of stacking sequence and short-range ordering of solute atoms on elastic properties of Mg-Zn-Y alloys with long-period stacking ordered structures, M. Tane,H. Kimizuka,K. Hagihara,S. Suzuki,T. Mayama,T. Sekino,Y. Nagai, ACTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 96, p. 170-188, 2015/09
  • シンクロ型LPSO構造相の塑性変形挙動, 萩原幸司,東田賢二, まてりあ(日本金属学会誌), Vol. 54, p. 60-64, 2015/02
  • Crystallographic nature of deformation bands shown in Zn and Mg-based long-period stacking ordered (LPSO) phase, Koji Hagihara,Michiaki Yamasaki,Masahito Honnami,Hitoshi Izuno,Masakazu Tane,Takayoshi Nakano,Yoshihito Kawamura, PHILOSOPHICAL MAGAZINE, TAYLOR & FRANCIS LTD, Vol. 95, No. 2, p. 132-157, 2015/01
  • Crystal Plasticity Analysis of Development of Intragranular Misorientations due to Kinking in HCP Single Crystals Subjected to Uniaxial Compressive Loading, Tsuyoshi Mayama,Tetsuya Ohashi,Yuichi Tadano,Koji Hagihara, MATERIALS TRANSACTIONS, JAPAN INST METALS, Vol. 56, No. 7, p. 963-972, 2015
  • In-Situ Observation on the Formation Behavior of the Deformation Kink Bands in Zn Single Crystal and LPSO Phase, Koji Hagihara,Masahito Honnami,Ryosuke Matsumoto,Yoshihiro Fukusumi,Hitoshi Izuno,Michiaki Yamasaki,Takuya Okamoto,Takayoshi Nakano,Yoshihito Kawamura, MATERIALS TRANSACTIONS, JAPAN INST METALS, Vol. 56, No. 7, p. 943-951, 2015
  • Development of Single Crystalline Bone Plate with Low Young's Modulus Using Beta-type Ti-15Mo-5Zr-3Al Alloy, Mitsuharu Todai,Koji Hagihara,Takuya Ishimoto,Kengo Yamamoto,Takayoshi Nakano, TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, IRON STEEL INST JAPAN KEIDANREN KAIKAN, Vol. 101, No. 9, p. 501-505, 2015
  • Control of &ldquo;Material Parameters&rdquo; and &ldquo;Structural Parameters&rdquo; for Anisotropic and Customized Design, Nakano Takayoshi,Ishimoto Takuya,Hagihara Koji,Ide Takuya,Nakamoto Masashi,Suyalatu,Sun Shihai,Araki Hideki,Tamaoka Hidefusa, Materia Japan, The Japan Institute of Metals and Materials, Vol. 54, No. 10, p. 502-504, 2015
  • An Approach to Creation of Innovation Styles for Anisotropic and Customized Design and Manufacture, Araki Hideki,Nakano Takayoshi,Ishimoto Takuya,Hagihara Koji,Ide Takuya,Nakamoto Masashi,Tamaoka Hidefusa, Materia Japan, The Japan Institute of Metals and Materials, Vol. 54, No. 10, p. 519-521, 2015
  • Mechanisms of Cr segregation to C11(b)/C40 lamellar interface in (Mo,Nb)Si-2 duplex silicide: A phase-field study to bridge experimental and first-principles investigations, Toshihiro Yamazaki,Yuichiro Koizumi,Koretaka Yuge,Akihiko Chiba,Koji Hagihara,Takayoshi Nakano,Kyosuke Kishida,Haruyuki Inui, INTERMETALLICS, ELSEVIER SCI LTD, Vol. 54, p. 232-241, 2014/11
  • Degradation behavior of Ca-Mg-Zn intermetallic compounds for use as biodegradable implant materials, Koji Hagihara,Shuhei Shakudo,Kenta Fujii,Takayoshi Nakano, MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS, ELSEVIER SCIENCE BV, Vol. 44, p. 285-292, 2014/11
  • 六方晶系材料にて観察される変形帯の特徴, 本浪雅史,萩原幸司,伊津野仁史,多根正和,山崎倫昭,眞山剛,中野貴由,河村能人, 第58回 日本学術会議材料工学連合講演会 講演論文集, 2014/10
  • 単結晶による生体用β型チタン合金の交番変形特性解明, 萩原幸司, チタン, Vol. 62, 2014/10
  • 強化相としてのLPSO相が示す塑性異方性, 萩原幸司,岡本拓也,伊津野仁史,本浪雅史,山崎倫昭,中野貴由,河村能人, 第58回 日本学術会議材料工学連合講演会 講演論文集, p. 325-326, 2014/10
  • 高機能構造材料開発への取り組み, 萩原幸司, まてりあ(日本金属学会誌), Vol. 53, p. 348-354, 2014/08
  • Control of microstructure and fracture toughness improvement of NbSi2/MoSi2 duplex lamellar silicides by TaC particles dispersion, Koji Hagihara,Tatsuya Fushiki,Takayoshi Nakano, SCRIPTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 82, p. 53-56, 2014/07
  • Highly ordered 10H-type long-period stacking order phase in a Mg-Zn-Y ternary alloy, Michiaki Yamasaki,Masafumi Matsushita,Koji Hagihara,Hitoshi Izuno,Eiji Abe,Yoshihito Kawamura, SCRIPTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 78-79, p. 13-16, 2014/05
  • Microsructure and mechanical properties of the NbSi2/MoSi2 crystal with lamellar structure, K. Hagihara,Y. Hama,T. Fushiki,K. Yuge,T. Nakano, Materials Science Forum, Vol. 783-786, p. 1123-1128, 2014/04
  • Ab-initio study of long-period superstructures and anti-phase boundaries in Al-rich gamma-TiAl (L1(0))-based alloys, P. S. Ghosh,A. Arya,U. D. Kulkarni,G. K. Dey,S. Hata,T. Nakano,K. Hagihara,H. Nakashima, PHILOSOPHICAL MAGAZINE, TAYLOR & FRANCIS LTD, Vol. 94, No. 11, p. 1202-1218, 2014/04
  • Interface migration with segregation in MoSi<inf>2</inf>-based lamellar alloy simulated by phase-field method, Toshihiro Yamazaki,Yuichiro Koizumi,Akihiko Chiba,Koji Hagihara,Takayoshi Nakano,Koretaka Yuge,Kyosuke Kishida,Haruyuki Inui, Advanced Materials Research, Vol. 922, p. 832-837, 2014
  • Development of Microstructures of Long-Period Stacking Ordered Structures in Mg85Y9Zn6 Alloys Annealed at 673 K (400 degrees C) Examined by Small-Angle X-Ray Scattering, Hiroshi Okuda,Toshiki Horiuchi,Toshiki Maruyama,Michiaki Yamasaki,Yoshihito Kawamura,Koji Hagihara,Shinji Kohara, METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, SPRINGER, Vol. 45A, No. 1, p. 147-151, 2014/01
  • OS0101 Characteristics of the deformation bands formed in the LPSO phase, HAGIHARA Koji,HONNAMI Masahito,YAMASAKI Michiaki,OKAMOTO Takuya,IZUNO Hitoshi,TANE Masakazu,NAKANO Takayoshi,KAWAMURA Yoshihito, The Proceedings of the Materials and Mechanics Conference, The Japan Society of Mechanical Engineers, Vol. 2014, No. 0, p. _OS0101-1_-_OS0101-2_, 2014
  • Cr segregation at C11(b)/C40 interface in MoSi2-based alloys: A first-principles study, Koretaka Yuge,Kyosuke Kishida,Haruyuki Inui,Yuichiro Koizumi,Koji Hagihara,Takayoshi Nakano, INTERMETALLICS, ELSEVIER SCI LTD, Vol. 42, p. 165-169, 2013/11
  • Mg基シンクロ型LPSO相の塑性変形機構、Mg合金強化に及ぼす寄与, 萩原幸司,山崎倫昭,中野貴由,河村能人, 第57回 日本学術会議材料工学連合講演会 講演論文集, 2013/11
  • Possibility of Mg- and Ca-based intermetallic compounds as new biodegradable implant materials, Koji Hagihara,Kenta Fujii,Aira Matsugaki,Takayoshi Nakano, MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS, ELSEVIER SCIENCE BV, Vol. 33, No. 7, p. 4101-4111, 2013/10
  • Elastic properties of an Mg-Zn-Y alloy single crystal with a long-period stacking-ordered structure, M. Tane,Y. Nagai,H. Kimizuka,K. Hagihara,Y. Kawamura, ACTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 61, No. 17, p. 6338-6351, 2013/10
  • シンクロ型LPSO相におけるキンク変形帯の結晶学的特徴, 萩原幸司, 日本機械学会 2013年度年次大会 講演論文集, 2013/09
  • Deformation behavior of LPSO phase and Zn accompanied by kink band formation, K. Hagihara,Y. Fukusumi,M. Yamasaki,R. Matsumoto,M. Honnami,H. Izuno,T. Nakano,Y. Kawamura, Proc. of PRICM8, p. 973-978, 2013/08
  • Non-basal slip in Ni-3(Ti, Nb) and Ni-3(Ti, Al) single crystals with various long-period stacking ordered structures, Koji Hagihara,Tetsunori Tanaka,Hitoshi Izuno,Yukichi Umakoshi,Takayoshi Nakano, ACTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 61, No. 12, p. 4365-4373, 2013/07
  • 1400℃に耐える合金, 萩原幸司,中野貴由, Ceramics Japan, Vol. 48, 2013/06
  • Misfit strain affecting the lamellar microstructure in NbSi 2/MoSi2 duplex crystals, Koji Hagihara,Yoichiro Hama,Koretaka Yuge,Takayoshi Nakano, Acta Materialia, Vol. 61, No. 9, p. 3432-3444, 2013/05
  • First-principles investigation of phase stability and electronic structure of tetragonal (P4/m) Ga3-xAlxTi2 (x=03) compounds, P. S. Ghosh,A. Arya,U. D. Kulkarni,G. K. Dey,T. Nakano,Y. Umakoshi,K. Hagihara,S. Hata, PHILOSOPHICAL MAGAZINE LETTERS, TAYLOR & FRANCIS LTD, Vol. 93, No. 5, p. 273-282, 2013/05
  • Crystallographic classification of kink bands in an extruded Mg-Zn-Y alloy using intragranular misorientation axis analysis, Michiaki Yamasaki,Koji Hagihara,Shin-ichi Inoue,Jason Paul Hadorn,Yoshihito Kawamura, ACTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 61, No. 6, p. 2065-2076, 2013/04
  • Yield stress anomaly controlled by the phase stability in NbSi2 single crystals, Takayoshi Nakano,Koji Hagihara, SCRIPTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 68, No. 5, p. 313-316, 2013/03
  • High-temperature compressive deformation behavior of Mg97Zn1Y2 extruded alloy containing a long-period stacking ordered (LPSO) phase, K. Hagihara,A. Kinoshita,Y. Fukusumi,M. Yamasaki,Y. Kawamura, MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, ELSEVIER SCIENCE SA, Vol. 560, p. 71-79, 2013/01
  • シンクロ型LPSO相の塑性変形挙動, 萩原 幸司, セミナーテキスト シンクロ型LPSO構造の材料科学 −次世代軽量構造材料へのイノベーション−, p. 19-22, 2013/01
  • Non-basal slip systems operative in Mg12ZnY long-period stacking ordered (LPSO) phase with 18R and 14H structures, K. Hagihara,Y. Fukusumi,M. Yamasaki,T. Nakano,Y. Kawamura, Materials Transactions, Vol. 54, No. 5, p. 693-697, 2013
  • Long-period ordered superstructures that appear in an (Al,Ga)-rich (Al,Ga)Ti system, Takayoshi Nakano,Koji Hagihara,Satoshi Hata,Hajime Shigyo,Hideharu Nakashima,Yukichi Umakoshi,Ashok Arya,Ulhas D. Kulkarni, Philosophical Magazine, Vol. 93, No. 1-3, p. 22-37, 2013/01/01
  • OS0413 Experimental study on deformation kink bands formed in LPSO phase and HCP crystals, HAGIHARA Koji,HONNAMI Masahito,IZUNO Hitoshi,NAKANO Takayoshi,YAMASAKI Michiaki,KAWAMURA Yoshihito, The Proceedings of the Materials and Mechanics Conference, The Japan Society of Mechanical Engineers, Vol. 2013, No. 0, p. _OS0413-1_-_OS0413-2_, 2013
  • Compression of micro-pillars of a long period stacking ordered phase in the Mg-Zn-Y system, Atsushi Inoue,Kyosuke Kishida,Haruyuki Inui,Koji Hagihara, Materials Research Society Symposium Proceedings, Vol. 1516, p. 151-156, 2013
  • Phase-field study on the segregation mechanism of additive elements in NbSi<inf>2</inf>/MoSi<inf>2</inf> duplex suicide, Toshihiro Yamazaki,Yuichiro Koizumi,Akihiko Chiba,Koji Hagihara,Takayoshi Nakano,Koretaka Yuge,Kyosuke Kishida,Haruyuki Inui, Materials Research Society Symposium Proceedings, Vol. 1516, p. 145-150, 2013
  • Phase-field simulation of lamellar structure formation in MoSi <inf>2</inf>/NbSi<inf>2</inf> duplex suicide, Yuichiro Koizumi,Toshihiro Yamazaki,Akihiko Chiba,Koji Hagihara,Takayoshi Nakano,Koretaka Yuge,Kyosuke Kishida,Haruyuki Inui, Materials Research Society Symposium Proceedings, Vol. 1516, p. 309-315, 2013
  • Biocompatible low Young's modulus achieved by strong crystallographic elastic anisotropy in Ti-15Mo-5Zr-3Al alloy single crystal, S. -H. Lee,M. Todai,M. Tane,K. Hagihara,H. Nakajima,T. Nakano, JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS, ELSEVIER SCIENCE BV, Vol. 14, p. 48-54, 2012/10
  • シンクロ型LPSO相の塑性変形機構,Mg合金強化機構, 萩原幸司, 日本機械学会2012年度年次大会 講演概要集, 2012/09
  • Microstructural and Orientation Dependence of the Plastic Deformation Behavior in beta-type Ti-15Mo-5Zr-3Al Alloy Single Crystals, Sang-Hoon Lee,Koji Hagihara,Takayoshi Nakano, METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, SPRINGER, Vol. 43A, No. 5, p. 1588-1597, 2012/05
  • ミニ特集「若手研究者からみた研究教育のグローバル化とこれからの日本の材料科学」, 波多聰,廣澤渉一,村上恭和,井誠一郎,萩原幸司,中川惠友,池田賢一,松田光弘,宮野公樹,塗溶, まてりあ, Vol. 51, p. 453-454, 2012/05
  • First-principles study on phase stability of MoSi2-NbSi2 pseudobinary alloys, Koretaka Yuge,Yuichiro Koizumi,Koji Hagihara,Takayoshi Nakano,Kyosuke Kishida,Haruyuki Inui, PHYSICAL REVIEW B, AMER PHYSICAL SOC, Vol. 85, No. 13, 2012/04
  • Microstructural factors affecting the deformation behavior of Mg12ZnY LPSO-phase alloys, Koji Hagihara,Akihito Kinoshita,Yoshihiro Fukusumi,Michiaki Yamasaki,Yoshihito Kawamura, THERMEC 2011, PTS 1-4, TRANS TECH PUBLICATIONS LTD, Vol. 706-709, p. 1158-+, 2012
  • Single Crystal Growth and its Microstructure in Co-Cr-Mo alloys for Biomedical Applications, Takayoshi Nakano,Keita Sasaki,Koji Hagihara,Takuya Ishimoto,Yusuke Fujii,Ai Serizawa, THERMEC 2011, PTS 1-4, TRANS TECH PUBLICATIONS LTD, Vol. 706-709, p. 561-+, 2012
  • OS0306 Kink deformation in synchronized LPSO-phase and HCP metals, HAGIHARA Koji,FUKUSUMI Yoshihiro,NAKANO Takayoshi,YAMASAKI Michiaki,KAWAMURA Yoshihito, The Proceedings of the Materials and Mechanics Conference, The Japan Society of Mechanical Engineers, Vol. 2012, No. 0, p. _OS0306-1_-_OS0306-2_, 2012
  • Fracture behavior and toughness of NbSi2-based single crystals and MoSi2(C11(b))/NbSi2(C40) duplex crystals with a single set of lamellae, K. Hagihara,T. Nakano, ACTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 59, No. 10, p. 4168-4176, 2011/06
  • Plastic Deformation Behavior of Mg12ZnY LPSO-Phase with 14H-Typed Structure, K. Hagihara,Y. Sugino,Y. Fukusumi,Y. Umakoshi,T. Nakano, MATERIALS TRANSACTIONS, JAPAN INST METALS, Vol. 52, No. 6, p. 1096-1103, 2011/06
  • Effect of multimodal microstructure evolution on mechanical properties of Mg-Zn-Y extruded alloy, Michiaki Yamasaki,Kenji Hashimoto,Koji Hagihara,Yoshihito Kawamura, ACTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 59, No. 9, p. 3646-3658, 2011/05
  • Effects of Cr-addition and lamellar microstructure on the oxidation behavior of single crystal (Mo0.85Nb0.15)Si-2, Ou Zhu,Lanting Zhang,Jinxing Yu,Aidang Shan,Jiansheng Wu,Koji Hagihara,Takayoshi Nakano, JOURNAL OF ALLOYS AND COMPOUNDS, ELSEVIER SCIENCE SA, Vol. 509, No. 5, p. 1511-1516, 2011/02
  • Low Young&apos;s modulus of Ti-Nb-Ta-Zr alloys caused by softening in shear moduli c &apos; and c(44) near lower limit of body-centered cubic phase stability, M. Tane,S. Akita,T. Nakano,K. Hagihara,Y. Umakoshi,M. Niinomi,H. Mori,H. Nakajima, ACTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 58, No. 20, p. 6790-6798, 2010/12
  • Effect of long-period stacking ordered phase on mechanical properties of Mg97Zn1Y2 extruded alloy, K. Hagihara,A. Kinoshita,Y. Sugino,M. Yamasaki,Y. Kawamura,H. Y. Yasuda,Y. Umakoshi, ACTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 58, No. 19, p. 6282-6293, 2010/11
  • Effect of Extrusion Parameters on Mechanical Properties of Mg97Zn1Y2 Alloys at Room and Elevated Temperatures, Masaaki Hirano,Michiaki Yamasaki,Koji Hagihara,Kenji Higashida,Yoshihito Kawamura, MATERIALS TRANSACTIONS, JAPAN INST METALS, Vol. 51, No. 9, p. 1640-1647, 2010/09
  • Plastic deformation behavior of Mg97Zn1Y2 extruded alloys, K. Hagihara,A. Kinoshita,Y. Sugino,M. Yamasaki,Y. Kawamura,H. Y. Yasuda,Y. Umakoshi, TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, ELSEVIER SCIENCE BV, Vol. 20, No. 7, p. 1259-1268, 2010/07
  • Plastic deformation behavior of Mg89Zn4Y7 extruded alloy composed of long-period stacking ordered phase, K. Hagihara,A. Kinoshita,Y. Sugino,M. Yamasaki,Y. Kawamura,H. Y. Yasuda,Y. Umakoshi, INTERMETALLICS, ELSEVIER SCI LTD, Vol. 18, No. 5, p. 1079-1085, 2010/05
  • Improvement of aligned lamellar structure by Cr-addition to NbSi2/MoSi2 duplex-silicide crystals, K. Hagihara,T. Nakano,S. Hata,O. Zhu,Y. Umakoshi, SCRIPTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 62, No. 8, p. 613-616, 2010/04
  • Plastic deformation behavior of Ni-3(Ti0.7Nb0.3) single crystals with D0(19) structure, K. Hagihara,H. Fujimoto,T. Nakano,Y. Umakoshi, INTERMETALLICS, ELSEVIER SCI LTD, Vol. 18, No. 4, p. 434-440, 2010/04
  • Plastic deformation behavior of Mg12YZn with 18R long-period stacking ordered structure, K. Hagihara,N. Yokotani,Y. Umakoshi, INTERMETALLICS, ELSEVIER SCI LTD, Vol. 18, No. 2, p. 267-276, 2010/02
  • Change in Microstructure by Heat-treatment and Corresponding Deformation Behavior in Ni3V Single Crystals, Koji Hagihara,Mayumi Mori,Takuya Kishimoto,Yukichi Umakoshi, THERMEC 2009, PTS 1-4, TRANS TECH PUBLICATIONS LTD, Vol. 638-642, p. 1318-+, 2010
  • Multimodal Microstructure Evolution in Wrought Mg-Zn-Y Alloys with High Strength and Increased Ductility, Michiaki Yamasaki,Kenji Hashimoto,Koji Hagihara,Yoshihito Kawamura, PRICM 7, PTS 1-3, TRANS TECH PUBLICATIONS LTD, Vol. 654-656, p. 615-+, 2010
  • Temperature Dependence of Compressive Deformation Behavior of Mg89Zn4Y7 Extruded LPSO-Phase Alloys, Koji Hagihara,Akihito Kinoshita,Yuya Sugino,Michiaki Yamasaki,Yoshihito Kawamura,Hiroyuki Y. Yasuda,Yukichi Umakoshi, PRICM 7, PTS 1-3, TRANS TECH PUBLICATIONS LTD, Vol. 654-656, p. 607-+, 2010
  • Controlling factors on the fatigue behaviour of Ti-Nb-Ta-Zr alloys single crystals, K.Hagihara,T.Nakano,M.Niinomi, Proc. of PFAM 18 (Processing and Fabrication of Advanced Materials, p. 1023-1030, 2009/12
  • Oxygen Distribution in Titanium Single Crystal Fabricated by Optical Floating-Zone Method under Extremely Low Oxygen Partial Pressure, Koji Hagihara,Takahiro Tachibana,Keita Sasaki,Yoshiyuki Yoshida,Naoki Shirakawa,Tohru Nagasawa,Takayuki Narushima,Takayoshi Nakano, MATERIALS TRANSACTIONS, JAPAN INST METALS, Vol. 50, No. 12, p. 2709-2715, 2009/12
  • Mg12ZnY長周期相の塑性変形機構、Mg合金強化機構, 萩原幸司,木下昭人,杉野裕也,山崎倫昭,河村能人,馬越佑吉, 日本機械学会 M&M2009材料力学カンファレンス論文集, 2009/07
  • RELATION BETWEEN THE MICROSTRUCTURE AND THE PLASTIC DEFORMATION BEHAVIOR IN Mg12ZnY WITH LPSO STRUCTURE, Koji Hagihara,Akihito Kinoshita,Yuya Sugino,Naoyuki Yokotani,Michiaki Yamasaki,Yoshihito Kawamura,Yukichi Umakoshi, MAGNESIUM TECHNOLOGY 2009, MINERALS, METALS & MATERIALS SOC, p. 477-+, 2009
  • Single-crystal growth and plastic deformation behaviour of a Ti-15Mo-5Zr-3Al alloy for biomedical application, S. H. Lee,K. Hagihara,M. H. Oh,T. Nakano, Journal of Physics: Conference Series, Institute of Physics Publishing, Vol. 165, 2009
  • Influence of heat-treatment on microstructure and plastic deformation behavior in Ni3V single crystals with the D022 structure, K. Hagihara,M. Mori,T. Kishimoto,Y. Umakoshi, Journal of Physics: Conference Series, Institute of Physics Publishing, Vol. 165, 2009
  • Role of the Microstructure on the Deformation Behavior in Mg12ZnY With a Long-Period Stacking Ordered Structure, K. Hagihara,N. Yokotani,A. Kinoshita,Y. Sugino,H. Yamamoto,M. Yamasaki,Y. Kawamura,Y. Umakoshi, ADVANCED INTERMETALLIC-BASED ALLOYS FOR EXTREME ENVIRONMENT AND ENERGY APPLICATIONS, MATERIALS RESEARCH SOC, Vol. 1128, p. 329-+, 2009
  • Fabrication of Titanium Single Crystal by a Floating Zone Method under Extremely Low Oxygen Partial Pressure, Koji Hagihara,Takahiro Tachibana,Keita Sasaki,Yoshiyuki Yoshida,Naoki Shirakawa,Tohru Nagasawa,Takayuki Narushima,Takayoshi Nakano, JOURNAL OF THE JAPAN INSTITUTE OF METALS, JAPAN INST METALS, Vol. 72, No. 12, p. 928-934, 2008/12
  • Peculiar elastic behavior of Ti-Nb-Ta-Zr single crystals, M. Tane,S. Akita,T. Nakano,K. Hagihara,Y. Umakoshi,M. Niinomi,H. Nakajima, ACTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 56, No. 12, p. 2856-2863, 2008/07
  • 長周期積層構造相の力学特性、塑性変形挙動, 萩原幸司, 日本金属学会分科会シンポジウム「長周期積層構造型マグネシウム合金の現状と今後の課題」 予稿, p. 29-32, 2008/05
  • Fabrication and Plastic Deformation Behavior of Lamellar Ti-rich TiAl Crystals with Lotus-Type Aligned Pores, T. Nakano,T. Tachibana,K. Hagihara,Y. Umakoshi,T. Ide,M. Tane,H. Nakajima, POROUS METALS AND METALLIC FOAMS: METFOAM 2007, DESTECH PUBLICATIONS, INC, p. 213-+, 2008
  • Crystal growth and plastic deformation behavior of Ti-29Nb-13Ta-4.6Zr bcc-based single crystal, T. Nakano,K. Hagihara,H. Maki,Y. Umakoshi,M. Niinomi, Proc. Ti-2007 JIMIC5 (Science and Technnology), p. 1437-1439, 2007/06
  • Effect of bcc-phase stability on cyclic deformation behavior in beta-type Ti-Nb-Ta-Zr alloys single crystals with different Nb content, K. Hagihara,T. Nakano,A. Sonoura,K. Watanabe,Y. Umakoshi,M. Niinomi, Proc. in Ti-2007, p. 1445-1447, 2007/06
  • Effect of C11(b)-Stabilized element on deformation mode in C40-type (Nb1-xMox)Si-2 (x=0-0.85) single crystals, Takayoshi Nakano,Koji Hagihara,Yukichi Umakoshi, ADVANCED INTERMETALLIC-BASED ALLOYS, MATERIALS RESEARCH SOC, Vol. 980, p. 297-+, 2007
  • Effects of the anisotropy of the anti-phase boundary energy on the yield-stress anomaly in Ni3X compounds with close-packed crystal structures, K. Hagihara,T. Tanaka,T. Nakano,P. Veyssiere,Y. Umakoshi, PHILOSOPHICAL MAGAZINE LETTERS, TAYLOR & FRANCIS LTD, Vol. 87, No. 10, p. 705-712, 2007
  • Plastic deformation behavior of oriented Ni3V crystals with D0(22) structure, Koji Hagihara,Mayumi Mori,Yukichi Umakoshi, ADVANCED INTERMETALLIC-BASED ALLOYS, MATERIALS RESEARCH SOC, Vol. 980, p. 523-+, 2007
  • Microstructure and deformation behavior of lamellar Ti-rich TiAl crystal with lotus-type aligned pores, Takayoshi Nakano,Takahiro Tachibana,Koji Hagihara,Yukichi Umakoshi,Takuya Ide,Masakazu Tane,Hideo Nakajima, PRICM 6: SIXTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-3, TRANS TECH PUBLICATIONS LTD, Vol. 561-565, p. 383-+, 2007
  • Microstructure and plastic deformation behavior of Ni3V single crystals, Koji Hagihara,Mayumi Mori,Yukichi Umakoshi, PRICM 6: SIXTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-3, TRANS TECH PUBLICATIONS LTD, Vol. 561-565, p. 407-+, 2007
  • Ni3X型金属間化合物の結晶構造と塑性変形挙動, 萩原幸司, まてりあ, Vol. 45, p. 813-816, 2006/11
  • Isothermal oxidation behavior of two-phase TiAl-Mn-Mo-C-Y alloys fabricated by different processes, Y Wu,SK Hwang,K Hagihara,Y Umakoshi, INTERMETALLICS, ELSEVIER SCI LTD, Vol. 14, No. 1, p. 9-23, 2006/01
  • The effect of Ti-addition on plastic deformation and fracture behavior of directionally solidified NiAl/Cr(Mo) eutectic alloys, K. Hagihara,Y. Sugino,Y. Umakoshi, INTERMETALLICS, ELSEVIER SCI LTD, Vol. 14, No. 10-11, p. 1326-1331, 2006
  • Plastic deformation behavior of NbSi2/MOSi2 crystals with oriented lamellae, T. Nakano,K. Hagihara,Y. Nakai,Y. Umakoshi, INTERMETALLICS, ELSEVIER SCI LTD, Vol. 14, No. 10-11, p. 1345-1350, 2006
  • Temperature and orientation dependence of fracture behavior of directionally solidified duplex-phase crystals composed of Ni(3)X-type intermetallic compounds, Koji Hagihara,Naoyuki Yokotani,Yukichi Urnakoshi, ADVANCED STRUCTURAL AND FUNCTIONAL MATERIALS DESIGN, PROCEEDINGS, TRANS TECH PUBLICATIONS LTD, Vol. 512, p. 67-72, 2006
  • Microstructure and plastic deformation behavior of Ni-3(Ti,X) (X = Nb,Al) single crystals with long-period geometrically closely packed crystal structures, K. Hagihara,T. Tanaka,H. Fujimoto,T. Nakano,Y. Umakoshi, INTERMETALLICS, ELSEVIER SCI LTD, Vol. 14, No. 10-11, p. 1332-1338, 2006
  • Dislocation Structure and Yield Stress Anomaly in D0_<24>-Ni_3Ti Compounds with the GCP Structure, HAGIHARA Koji,NAKANO Takayoshi,UMAKOSHI Yukichi, Materia Japan, The Japan Institute of Metals and Materials, Vol. 44, No. 12, p. 997-997, 2005/12/20
  • GCP構造を有するDo24型Ni3Ti化合物の転位構造と異常強化挙動, 萩原幸司,中野貴由,馬越佑吉, 特集「電子顕微鏡法による材料開発のための微細構造研究最前線(5)」、まてりあ, 2005/12
  • Plastic deformation behavior of Ni3(Ti0.90Nb0.10) single crystals with nine-layered ordered rhombohedral structure, K. Hagihara,T. Tanaka,T. Nakano,Y. Umakoshi, Acta Materialia, Vol. 53, p. 5051-5059, 2005/10
  • Improvement of cyclic oxidation resistance of Y-containing TiAl-based alloys with equiaxial gamma microstructures, Y Wu,K Hagihara,Y Umakoshi, INTERMETALLICS, ELSEVIER SCI LTD, Vol. 13, No. 8, p. 879-884, 2005/08
  • Crystal structure, phase stability and plastic deformation behavior of Ti-rich Ni-3(Ti,Nb) single crystals with various long-period ordered structures, K Hagihara,T Tanaka,T Nakano,Y Umakoshi, Integrative and Interdisciplinary Aspects of Intermetallics, MATERIALS RESEARCH SOCIETY, Vol. 842, p. 91-96, 2005
  • Stacking Structure and Phase Stability in Ni-based GCP Compounds, HAGIHARA Koji,TANAKA Tetsunori,NAKANO Takayoshi,UMAKOSHI Yukichi, Materia Japan, The Japan Institute of Metals and Materials, Vol. 43, No. 12, p. 993-993, 2004/12/20
  • Production of nano-crystal and metallic glass by electron irradiation induced phase transformation., Takeshi Nagase,Takayoshi Nakano,Hiroyuki Yasuda,Koji Hagihara,Yukichi Umakoshi, 2004/10
  • Influence of Y-addition on the oxidation behavior of Al-rich gamma-TiAl alloys, Y Wu,K Hagihara,Y Umakoshi, INTERMETALLICS, ELSEVIER SCI LTD, Vol. 12, No. 5, p. 519-532, 2004/05
  • Indentation fracture behavior of (Mo0.85Nb0.15)Si-2 crystals with C40 single-phase and MOSi2(C11(b))/NbSi2(C40) duplex-phase with oriented lamellae, K Hagihara,S Maeda,T Nakano,Y Umakoshi, SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS, NATL INST MATERIALS SCIENCE, Vol. 5, No. 1-2, p. 11-17, 2004/01
  • Plastic deformation behavior of oriented Ni3Sn crystals with D019 structure, K. Hagihara,T. Nakano,Y. Umakoshi, Scripta Materialia, Vol. 48, p. 577-581, 2003/11
  • Plastic deformation behaviour in Ni3Ti single crystals with D024?structure, K. Hagihara,T. Nakano,Y. Umakoshi, Acta Materialia, Vol. 51, p. 2623-2637, 2003/10
  • Plastic deformation behavior and operative slip systems of ZrSi2 single crystals with C49 type of structure, T Nakano,Y Omomoto,K Hagihara,Y Umakoshi, SCRIPTA MATERIALIA, PERGAMON-ELSEVIER SCIENCE LTD, Vol. 48, No. 9, p. 1307-1312, 2003/05
  • Plastic deformation behavior of Ni3X(X Nb, Ti, Sn) type HCP-based intermetallics with the geometrically close-packed structure, K Hagihara,T Nakano,Y Umakoshi, DEFECT PROPERTIES AND RELATED PHENOMENA IN INTERMETALLIC ALLOYS, MATERIALS RESEARCH SOCIETY, Vol. 753, p. 357-362, 2003
  • Slip systems, dislocation structure and plastic deformation behavior of Nl(3)Tl single crystals with D0(24) structure, K Hagihara,T Nakano,Y Umakoshi, THERMEC'2003, PTS 1-5, TRANS TECH PUBLICATIONS LTD, Vol. 426-4, p. 1709-1714, 2003
  • Microstructure and compressive flow stress of directionally solidified ternary Ni3(Al, Nb) and quaternary Ni3(Al, Nb, Ti) alloys with duplex phase, K. Hagihara,T. Nakano,Y. Umakoshi, Science and Technology of Advanced Materials, Vol. 3, p. 193-199, 2002/06
  • Effect of Rh and V additions on plastic deformation behaviour in Ni3Nb single crystals with D0a structure, Koji Hagihara,Takayoshi Nakano,Yukichi Umakoshi, Materials Transactions, Japan Institute of Metals (JIM), Vol. 43, No. 9, p. 2267-2274, 2002
  • Plastic deformation behavior by slip on (001)[100] in Ni3Nb single crystals with D0a structure, K. Hagihara,T. Nakano,Y. Umakoshi, Materials Transactions, Vol. 42, p. 1998-2002, 2001/10
  • Operative slip systems and anomalous strengthening in Ni3Nb single crystals with the D0a structure, Y. Umakoshi,K. Hagihara,T. Nakano, Intermetallics, Vol. 9, No. 10-11, p. 955-961, 2001/10
  • Cyclic deformation behavior of Ni3Nb single crystals deforming by slip on (010)[100], K. Hagihara,T. Nakano,Y. Umakoshi, Intermetallics, Vol. 9, p. 239-244, 2001/08
  • Deformation twins in Ni3Nb single crystals with DOa structure, K. Hagihara,T. Nakano,Y. Umakoshi, Mat. Res. Soc. Sympo. Proc, Vol. 646, 2001/03
  • Deformation Substructure in Ni_3Nb Single Crystals with the D0_a Struntre, HAGIHARA Kouji,NAKANO Takayoshi,UMAKOSHI Yukichi, Materia Japan, The Japan Institute of Metals and Materials, Vol. 39, No. 12, p. 996-996, 2000/12/20
  • Plastic deformation behaviour and operative slip systems in Ni3Nb single crystals, K. Hagihara,T. Nakano,Y. Umakoshi, Acta Materialia, Vol. 48, p. 1469-1480, 2000/05
  • Strength and deformation mechanism of C40-based single crystal and polycrystalline silicides, Y. Umakoshi,T. Nakano,K. Kishimoto,D. Furuta,K. Hagihara,M. Azuma, Materials Science and Engineering A, Vol. 261, p. 113-121, 1999/10
  • Plastic Deformation Behavior of Ni3Nb Single Crystals, Koji Hagihara,Takayoshi Nakano,Yukichi Umakoshi, Proceedings of MRS Symposium, Vol. 552, 1999/09
  • Mechanical properties of C40-based ternary Mo(Si,Al)2 and quaternary (Mo,Zr)(Si,Al)2 silicides, K. Hagihara,T. Nakano,Y. Umakoshi, Scripta Materialia, Vol. 38, p. 471-476, 1998/10
  • Stress anomaly in Al-rich Ti-Al single crystals deformed by the motion of 1/2〈110] ordinary dislocations, T. Nakano,K. Hagihara,T. Seno,N. Sumida,M. Yamamoto,Y. Umakoshi, Philosophical Magazine Letters, Vol. 78, No. 5, p. 385-391, 1998

Misc.

  • Mg基長周期積層構造相を例にした金属におけるキンク変形,材料強化の可能性, 萩原幸司,山崎倫昭,河村能人,中野貴由, 繊維学会予稿集, Vol. 74, No. 1 (CD-ROM), 2019/06/05
  • 長周期積層構造型Mg合金に見られる層状構造とそのキンク変形, 山崎倫昭,萩原幸司,河村能人, 繊維学会予稿集, Vol. 74, No. 1 (CD-ROM), 2019/06/05
  • Mg基LPSO相中に観察される〈0001〉軸回転型キンク変形, 山崎倫昭,松本翼,萩原幸司,DROZDENKO Daria,河村能人, 日本金属学会講演概要(CD-ROM), Vol. 164th, 2019/03/06
  • LPSO相におけるキンク形成,強化挙動制御の試み, 萩原幸司,成本裕希,上山椋平,中野貴由,山崎倫昭,眞山剛,河村能人, 日本金属学会講演概要(CD-ROM), Vol. 164th, 2019/03/06
  • 六方晶系 Mg, Zn, MgZn2単結晶の溶解挙動の結晶方位依存性比較, 古田 智,萩原 幸司,中野 貴由,山崎 倫昭, 日本金属学会2018年秋期講演(第163回)大会講演概要集, 2018/09
  • キンク変形帯に着目したLPSO相押出合金の力学特性支配因子の検討, 萩原幸司,李自宣,山崎倫昭,河村能人,中野貴由, 日本金属学会2018年秋期講演(第163回)大会講演概要集, 2018/09
  • Mg-Zn-Y系18R-LPSO単相単結晶に形成されたキンク界面の転位構造, 松本翼,山崎倫昭,萩原幸司,河村能人, 日本金属学会2018年(第163回)秋期講演大会講演概要集, 2018/09
  • Mg基LPSO合金におけるキンク界面形成が加工硬化と歪み緩和に及ぼす影響, 松本翼,山崎倫昭,染川英俊,萩原幸司,河村能人, 軽金属学会第135回秋期講演大会講演概要集, 2018/09
  • Mg-Zn-Y系18R-LPSO単結晶に形成するキンク界面近傍の転位分布, 松本翼,山崎倫昭,萩原幸司,河村能人, 軽金属学会第134回春期講演大会講演概要集, 2018/05
  • Strengthening mechanisms acting in the extruded Mg-based LPSO phase, HAGIHARA Koji,YAMASAKI Michiaki,KAWAMURA Yoshihito,NAKANO Takayoshi, The Proceedings of the Materials and Mechanics Conference, The Japan Society of Mechanical Engineers, Vol. 2018, No. 0, 2018
  • Mg 単結晶溶解挙動の結晶方位依存性に影響を及ぼす諸因子, 古田 智,萩原 幸司,大久保 政欣,中野 貴由,山崎 倫昭, 日本金属学会2017年(第161回)秋期講演大会講演概要集, 2017/09
  • Mg/LPSO 二相 Mg89Zn4Y7合金一方向凝固材における相境界でのキンク変形挙動, 松本翼,山崎倫昭,萩原幸司,河村能人, 日本金属学会2017年(第160回)春期講演大会講演概要集, 2017/03
  • Isotropic plasticity of beta-type Ti-29Nb-13Ta-4.6Zr alloy single crystals for the development of single crystalline beta-Ti implants (vol 6, pg 29779, 2016), Koji Hagihara,Takayoshi Nakano,Hideaki Maki,Yukichi Umakoshi,Mitsuo Niinomi, SCIENTIFIC REPORTS, NATURE PUBLISHING GROUP, Vol. 6, 2016/08
  • 生体骨程度の低ヤング率を示す単結晶ボーンプレートの創製, 當代 光陽,萩原 幸司,中野 貴由, 日本バイオマテリアル学会大会予稿集, 日本バイオマテリアル学会, Vol. 37回, p. 238-238, 2015/11
  • OS0415 Experimental study of kink bands in LPSO phase in Mg based alloy using electron backscatter diffraction, YAMASAKI Michiaki,HAGIHARA Koji,MAYAMA Tsuyoshi,KAWAMURA Yoshihito, The Proceedings of the Materials and Mechanics Conference, 一般社団法人 日本機械学会, Vol. 2013, No. 0, p. _OS0415-1_-_OS0415-2_, 2013
  • 生体内溶解性構造材料としての(Ca、Mg、Zn)基金属間化合物の可能性, 藤井 健太,萩原 幸司,松垣 あいら,中野 貴由, 日本バイオマテリアル学会大会予稿集, 日本バイオマテリアル学会, Vol. シンポジウム2012, p. 249-249, 2012/11
  • OS2017 Mg基LPSO相の塑性挙動に及ぼす組織学的因子(OS20-3 チタンおよびLPSO型マグネシウム合金,OS-20 HCP金属の実験力学と計算力学), 萩原 幸司,木下 昭人,福住 嘉浩,山崎 倫昭,河村 能人, M&M材料力学カンファレンス, 一般社団法人 日本機械学会, Vol. 2011, No. 0, p. _OS2017-1_-_OS2017-2_, 2011
  • OS0301 Application of Composite Model to Mechanical Strength in LPSO Magnesium Alloys, KAWAMURA Yoshihito,KAWASAKI Tetsuro,YAMASAKI Michiaki,HAGIHARA Koji,MAYAMA Tsuyoshi,HIGASHIDA Kenji, The Proceedings of the Materials and Mechanics Conference, 一般社団法人 日本機械学会, Vol. 2009, No. 0, p. 570-572, 2009
  • OS0304 Multimodal Microstructure Evolution and Mechanical Properties of Mg Alloys, YAMASAKI Michiaki,HAGIHARA Koji,UMAKOSHI Yukichi,MORIKAWA Tatsuya,HIGASHIDA Kenji,KAWAMURA Yoshihito, The Proceedings of the Materials and Mechanics Conference, 一般社団法人 日本機械学会, Vol. 2009, No. 0, p. 579-580, 2009
  • OS0316 Mg_<12>ZnY長周期相の塑性変形機構,Mg合金強化機構(非立方晶型金属材料の変形現象とそのモデル化,オーガナイズドセッション), 萩原 幸司,木下 昭人,山崎 倫昭,河村 能人,馬越 祐吉, M&M材料力学カンファレンス, 一般社団法人 日本機械学会, Vol. 2009, No. 0, p. 732-733, 2009
  • Effect of extrusion on the mechanical properties of extruded Mg-Zn-Y alloys with long-period stacking ordered structure, KAWASAKI Tatsuro,YAMASAKI Michiaki,HAGIHARA Koji,UMAKOSHI Yukichi,HIGASHIDA Kenji,KAWAMURA Yoshihito, 大会講演概要, Vol. 113, p. 413-414, 2007/10/10
  • Mechanical properties and microstructure evaluation of extruded Mg-Zn-Y with long period stacking ordered structure, YAMASAKI Michiaki,TAMAGAWA Hirokazu,HAGIHARA Koji,UMAKOSHI Yukichi,HIGASHIDA Kenji,KAWAMURA Yoshihito, 大会講演概要, Vol. 112, p. 41-42, 2007/04/11
  • Strengthening mechanism of Mg-Zn-Y alloys with long period ordered structure, TAMAGAWA Hirokazu,YAMASAKI Michiaki,HAGIHARA Koji,UMAKOSHI Yukichi,HIGASHIDA Kenji,KAWAMURA Yoshihito, 大会講演概要, Vol. 111, p. 171-172, 2006/10/18
  • Effect of plasticity processing on mechanical properties of Mg-Zn-Y alloys, TAMAGAWA Hirokazu,YAMASAKI Michiaki,HAGIHARA Koji,HIGASHIDA Kenji,KAWAMURA Yoshihito, 大会講演概要, Vol. 110, p. 361-362, 2006/04/13
  • 骨再建のための骨代替材料のナノ解析と骨質評価, 中野貴由,萩原幸司,馬越佑吉,明石満,中嶋英雄,今里聡,田畑泰彦, 日本金属学会2006 年春期(第138 回)大会(2006.3.21-23. 東京), 2006
  • Deformation modes and anomalous strengthening of Ni3X-Type intermetallic compounds with the geometrically close-packed structure, Yukichi Umakoshi,Koji Hagihara,Takayoshi Nakano, Materials Science Forum, Vol. 502, p. 145-150, 2005
  • Microstructure and plastic deformation behabiour in ternary Ni<sub>3</sub>(Al,Nb) and quaternary Ni<sub>3</sub>(Al,Nb,Ti)directionally solidified alloys with duplex-phase, Koji Hagihara,Takayoshi Nakano,Takayoshi Nakano,Yukichi Umakoshi,Yukichi Umakoshi, Science and Technology of Advanced Materials, Vol. 3, p. 193-199, 2002/03/01
  • Plastic deformation behaviour of Ni-based intermetallics single crystals for high-temperature heat-resistance, HAGIHARA Koji,NAKANO Takayoshi,UMAKOSHI Yukichi, Vol. 27, No. 4, 2001/07/20

Publications

  • LPSO型マグネシウム合金の材料科学 実用段階に入った日本発の新合金, 萩原幸司, 日経BPコンサルティング, 2018
  • バイオマテリアル研究の最前線, 萩原幸司, 日本金属学会, 2014
  • 未来型人工関節を目指して~その歴史から将来展望まで~, 萩原幸司, 日本医学館, 2013
  • 電子顕微鏡の実践と応用写真集, 萩原幸司, 日本金属学会, 2002

Industrial Property Rights

  • Ni基合金及び当該Ni基合金の製造方法, 萩原幸司,中野貴由,馬越佑吉, 特許第3726141号, 特願 2003-382158
  • インプラント部材用Co-Cr系合金単結晶とその製造方法およびインプラント部材, 中野貴由,萩原幸司,佐々木啓太, 特許第5561690号, 特願 2010-026753
  • 金属間化合物を含有する構造物の製造方法, 中野貴由,蘇亜拉図,石本卓也,萩原幸司, 特願2015-244678
  • 3次元造形物の積層造形法, 中野貴由,孫世海,萩原幸司, 特願2017-007454
  • 高硬度かつ靭性に優れる鋼, 南埜宜俊,萩原幸司,山本幸治,壬生翔平,平塚悠輔,藤松威史,杉本隼之, 特願WO/2019/035401
  • 高硬度かつ靭性に優れる鋼, 南埜宜俊,萩原幸司,山本幸治,壬生翔平,平塚悠輔,藤松威史,杉本隼之, 特願2017-158007

Awards

  • 第68回 日本金属学会 金属組織写真賞 (優秀賞), 2018/03
  • 第15回 軽金属学会 軽金属躍進賞, 2016/11
  • 第74回 日本金属学会 功績賞 [力学特性部門], 2016/03
  • 第17回 日本マグネシウム協会 奨励賞, 2014/06
  • 第10回 日本金属学会 村上奨励賞, 2013/09
  • 第60回 日本金属学会論文賞 [力学物性部門], 2012/09
  • 第15回 日本金属学会奨励賞 [力学特性部門], 2005/09
  • 第5回 日本金属学会・日本鉄鋼協会奨学賞, 1997/03
  • その他,学会ポスター賞など 計54件

Committee Memberships

  • 軽金属学会, 国際交流委員, 2019/03 - Present
  • 日本金属学会, 分科会委員(第5分科,第3分科), 2013 - Present
  • 軽金属学会, 関西支部 幹事委員, 2015/04 - 2021/03
  • 軽金属学会, 大会運営委員, 2017/04 - 2019/03
  • 日本金属学会, 欧文誌査読委員, 2014/04 - 2019/03
  • 日本金属学会, 学会会報(まてりあ)編集委員, 2009/04 - 2013/03

Other

  • 月刊総合情報誌「選択」, 2018 - 2018
  • 日刊工業新聞, 2017 - 2017
  • 朝日新聞, 2017 - 2017
  • 日刊工業新聞, 2016 - 2016
  • 日刊工業新聞, 2015 - 2015
  • 日刊工業新聞, 2014 - 2014
  • 日刊工業新聞, 2013 - 2013
  • 日刊工業新聞, 2013 - 2013
  • 日刊工業新聞, 2013 - 2013
  • 日刊工業新聞, 2012 - 2012
  • 日刊工業新聞, 2021/04 -