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　2021/04　Research paper (scientific journal)

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　Research paper (scientific journal)

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　Research paper (scientific journal)

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　Research paper (scientific journal)

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　Research paper (scientific journal)

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　Research paper (scientific journal)

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　Research paper (scientific journal)

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　Research paper (other academic)

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　Vol. 151　p. 112-124　2018/06/01　Research paper (scientific journal)

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　Vol. 214　p. 119-122　2018/03/01　Research paper (scientific journal)

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　Research paper (scientific journal)

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　Vol. 140　p. 307-316　2018/02/15　Research paper (scientific journal)

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　Vol. 710　p. 227-239　2018/01/05　Research paper (scientific journal)

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　Vol. 142　p. 111-115　2018/01　Research paper (scientific journal)

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　Vol. 98　p. 27-44　2017/11　Research paper (scientific journal)

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　Research paper (scientific journal)

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　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　Research paper (scientific journal)

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　Vol. 131　p. 19-23　2017/04　Research paper (scientific journal)

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　Vol. 132　p. 34-38　2017/04　Research paper (scientific journal)

In-Plane Positional Fluctuations of Zinc Atoms in Single Crystal Mg₈₅Zn₆Y₉ 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　Research paper (scientific journal)

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　Vol. 696　No. 696　p. 67-72　2017/03　Research paper (scientific journal)

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　Vol. 58　No. 4　p. 539-542　2017　Research paper (scientific journal)

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　Vol. 13　p. 61-70　2017/01/01　Research paper (scientific journal)

Anomalous strengthening behavior of Co-Cr-Mo alloy single crystals for biomedical applications

Koji Hagihara, Takayoshi Nakano, Keita Sasaki

SCRIPTA MATERIALIA　Vol. 123　p. 149-153　2016/10　Research paper (scientific journal)

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　Vol. 109　p. 68-85　2016/08　Research paper (scientific journal)

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　Vol. 177　p. 99-103　2016/08　Research paper (scientific journal)

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　Research paper (international conference proceedings)

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　Vol. 6　2016/07　Research paper (scientific journal)

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　Vol. 109　p. 90-102　2016/05　Research paper (scientific journal)

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　Vol. 117　p. 32-36　2016/05　Research paper (scientific journal)

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　Vol. 107　p. 196-212　2016/04　Research paper (scientific journal)

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　Research paper (scientific journal)

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　Vol. 113　p. 236-240　2016/03　Research paper (scientific journal)

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　Vol. 77　p. 174-191　2016/02　Research paper (scientific journal)

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　Vol. 102　p. 373-384　2016/01　Research paper (scientific journal)

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　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　Vol. 108　p. 358-366　2015/10　Research paper (scientific journal)

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　Vol. 96　p. 170-188　2015/09　Research paper (scientific journal)

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　Vol. 95　No. 2　p. 132-157　2015/01　Research paper (scientific journal)

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　Vol. 56　No. 7　p. 963-972　2015　Research paper (scientific journal)

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　Vol. 56　No. 7　p. 943-951　2015　Research paper (scientific journal)

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　Vol. 101　No. 9　p. 501-505　2015　Research paper (scientific journal)

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　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　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　Vol. 54　p. 232-241　2014/11　Research paper (scientific journal)

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　Vol. 44　p. 285-292　2014/11　Research paper (scientific journal)

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　Research paper (other academic)

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　Research paper (other academic)

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　Vol. 82　p. 53-56　2014/07　Research paper (scientific journal)

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　Vol. 78-79　p. 13-16　2014/05　Research paper (scientific journal)

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　Research paper (scientific journal)

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　Vol. 94　No. 11　p. 1202-1218　2014/04　Research paper (scientific journal)

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　Research paper (international conference proceedings)

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　Vol. 45A　No. 1　p. 147-151　2014/01　Research paper (scientific journal)

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　Vol. 2014　No. 0　p. _OS0101-1_-_OS0101-2_　2014　Research paper (other academic)

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　Vol. 42　p. 165-169　2013/11　Research paper (scientific journal)

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　Research paper (other academic)

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　Vol. 33　No. 7　p. 4101-4111　2013/10　Research paper (scientific journal)

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　Vol. 61　No. 17　p. 6338-6351　2013/10　Research paper (scientific journal)

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　Research paper (other academic)

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　Research paper (scientific journal)

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　Vol. 61　No. 12　p. 4365-4373　2013/07　Research paper (scientific journal)

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　Research paper (scientific journal)

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　Vol. 93　No. 5　p. 273-282　2013/05　Research paper (scientific journal)

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　Vol. 61　No. 6　p. 2065-2076　2013/04　Research paper (scientific journal)

Yield stress anomaly controlled by the phase stability in NbSi2 single crystals

Takayoshi Nakano, Koji Hagihara

SCRIPTA MATERIALIA　Vol. 68　No. 5　p. 313-316　2013/03　Research paper (scientific journal)

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　Vol. 560　p. 71-79　2013/01　Research paper (scientific journal)

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　Research paper (scientific journal)

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　Research paper (scientific journal)

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　Vol. 2013　No. 0　p. _OS0413-1_-_OS0413-2_　2013　Research paper (other academic)

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　Research paper (international conference proceedings)

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　Research paper (international conference proceedings)

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　Research paper (international conference proceedings)

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　Vol. 14　p. 48-54　2012/10　Research paper (scientific journal)

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　Research paper (other academic)

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　Vol. 43A　No. 5　p. 1588-1597　2012/05　Research paper (scientific journal)

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　Vol. 85　No. 13　2012/04　Research paper (scientific journal)

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　Vol. 706-709　p. 1158-+　2012　Research paper (international conference proceedings)

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　Vol. 706-709　p. 561-+　2012　Research paper (international conference proceedings)

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　Vol. 2012　No. 0　p. _OS0306-1_-_OS0306-2_　2012　Research paper (scientific journal)

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　Vol. 59　No. 10　p. 4168-4176　2011/06　Research paper (scientific journal)

Plastic Deformation Behavior of Mg12ZnY LPSO-Phase with 14H-Typed Structure

K. Hagihara, Y. Sugino, Y. Fukusumi, Y. Umakoshi, T. Nakano

MATERIALS TRANSACTIONS　Vol. 52　No. 6　p. 1096-1103　2011/06　Research paper (scientific journal)

Effect of multimodal microstructure evolution on mechanical properties of Mg-Zn-Y extruded alloy

Michiaki Yamasaki, Kenji Hashimoto, Koji Hagihara, Yoshihito Kawamura

ACTA MATERIALIA　Vol. 59　No. 9　p. 3646-3658　2011/05　Research paper (scientific journal)

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　Vol. 509　No. 5　p. 1511-1516　2011/02　Research paper (scientific journal)

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　Vol. 58　No. 20　p. 6790-6798　2010/12　Research paper (scientific journal)

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　Vol. 58　No. 19　p. 6282-6293　2010/11　Research paper (scientific journal)

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　Vol. 51　No. 9　p. 1640-1647　2010/09　Research paper (scientific journal)

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　Vol. 20　No. 7　p. 1259-1268　2010/07　Research paper (scientific journal)

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　Vol. 18　No. 5　p. 1079-1085　2010/05　Research paper (scientific journal)

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　Vol. 62　No. 8　p. 613-616　2010/04　Research paper (scientific journal)

Plastic deformation behavior of Ni-3(Ti0.7Nb0.3) single crystals with D0(19) structure

K. Hagihara, H. Fujimoto, T. Nakano, Y. Umakoshi

INTERMETALLICS　Vol. 18　No. 4　p. 434-440　2010/04　Research paper (scientific journal)

Plastic deformation behavior of Mg12YZn with 18R long-period stacking ordered structure

K. Hagihara, N. Yokotani, Y. Umakoshi

INTERMETALLICS　Vol. 18　No. 2　p. 267-276　2010/02　Research paper (scientific journal)

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　Vol. 638-642　p. 1318-+　2010　Research paper (international conference proceedings)

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　Vol. 654-656　p. 615-+　2010　Research paper (international conference proceedings)

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　Vol. 654-656　p. 607-+　2010　Research paper (international conference proceedings)

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　Research paper (international conference proceedings)

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　Vol. 50　No. 12　p. 2709-2715　2009/12　Research paper (scientific journal)

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　p. 477-+　2009　Research paper (international conference proceedings)

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　Vol. 165　2009　Research paper (international conference proceedings)

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　Vol. 165　2009　Research paper (international conference proceedings)

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　Vol. 1128　p. 329-+　2009　Research paper (international conference proceedings)

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　Vol. 72　No. 12　p. 928-934　2008/12　Research paper (scientific journal)

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　Vol. 56　No. 12　p. 2856-2863　2008/07　Research paper (scientific journal)

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　p. 213-+　2008　Research paper (international conference proceedings)

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　Research paper (international conference proceedings)

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　Research paper (international conference proceedings)

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　Vol. 980　p. 297-+　2007　Research paper (international conference proceedings)

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　Vol. 87　No. 10　p. 705-712　2007　Research paper (scientific journal)

Plastic deformation behavior of oriented Ni3V crystals with D0(22) structure

Koji Hagihara, Mayumi Mori, Yukichi Umakoshi

ADVANCED INTERMETALLIC-BASED ALLOYS　Vol. 980　p. 523-+　2007　Research paper (international conference proceedings)

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　Vol. 561-565　p. 383-+　2007　Research paper (international conference proceedings)

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　Vol. 561-565　p. 407-+　2007　Research paper (international conference proceedings)

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　Vol. 14　No. 1　p. 9-23　2006/01　Research paper (scientific journal)

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　Vol. 14　No. 10-11　p. 1326-1331　2006　Research paper (scientific journal)

Plastic deformation behavior of NbSi2/MOSi2 crystals with oriented lamellae

T. Nakano, K. Hagihara, Y. Nakai, Y. Umakoshi

INTERMETALLICS　Vol. 14　No. 10-11　p. 1345-1350　2006　Research paper (scientific journal)

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　Vol. 512　p. 67-72　2006　Research paper (scientific journal)

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　Vol. 14　No. 10-11　p. 1332-1338　2006　Research paper (scientific journal)

Dislocation Structure and Yield Stress Anomaly in D0_<24>-Ni_3Ti Compounds with the GCP Structure

HAGIHARA Koji, NAKANO Takayoshi, UMAKOSHI Yukichi

Materia Japan　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　Vol. 13　No. 8　p. 879-884　2005/08　Research paper (scientific journal)

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　Vol. 842　p. 91-96　2005　Research paper (international conference proceedings)

Stacking Structure and Phase Stability in Ni-based GCP Compounds

HAGIHARA Koji, TANAKA Tetsunori, NAKANO Takayoshi, UMAKOSHI Yukichi

Materia Japan　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　Research paper (bulletin of university, research institution)

Influence of Y-addition on the oxidation behavior of Al-rich gamma-TiAl alloys

Y Wu, K Hagihara, Y Umakoshi

INTERMETALLICS　Vol. 12　No. 5　p. 519-532　2004/05　Research paper (scientific journal)

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　Vol. 5　No. 1-2　p. 11-17　2004/01　Research paper (scientific journal)

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　Vol. 48　No. 9　p. 1307-1312　2003/05　Research paper (scientific journal)

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　Vol. 753　p. 357-362　2003　Research paper (international conference proceedings)

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　Vol. 426-4　p. 1709-1714　2003　Research paper (scientific journal)

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　Vol. 43　No. 9　p. 2267-2274　2002　Research paper (scientific journal)

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　Research paper (scientific journal)

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　Research paper (international conference proceedings)

Deformation Substructure in Ni_3Nb Single Crystals with the D0_a Struntre

HAGIHARA Kouji, NAKANO Takayoshi, UMAKOSHI Yukichi

Materia Japan　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　Research paper (international conference proceedings)

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　Research paper (scientific journal)