Hiroki Adachi

(足立大樹)

Profile Information

Affiliation: University of Hyogo

Degree: Ph.D. (Doctor of Philosophy)(Mar, 2001, Kyoto University)
Master of Engineering(Mar, 1998, Kyoto University)

J-GLOBAL ID: 201801016659893098
researchmap Member ID: B000344847

Research Interests

Research Areas

Research History

2019 - Present

Professor, Graduate School of Engineering, University of Hyogo
2015 - 2018

University of Hyogo
2010 - 2018

University of Hyogo
2007 - 2010

Kyoto University
2001 - 2006

Kyoto University

Education

Apr, 1998 - Mar, 2001

Kyoto University
Apr, 1996 - Mar, 1998

Kyoto University
Apr, 1992 - Mar, 1996

Faculty of Engineering, Kyoto University

Major Committee Memberships

Apr, 2025 - Present

代議員, 日本金属学会
Apr, 2022 - Present

日本金属学会会誌編集委員・欧文誌編集委員会編集委員, 日本金属学会
Apr, 2020 - Present

委員, 軽金属学会編集委員会
Apr, 2020 - Present

委員, 軽金属学会総務委員会
Apr, 2020 - Present

主査, SPring-8金属材料評価研究会
Apr, 2019 - Present

理事, 軽金属学会関西支部
Apr, 2018 - Present

委員, 日本鉄鋼協会・日本金属学会関西支部

Major Awards

May, 2024

軽金属功績賞, 軽金属学会

足立大樹
Nov, 2023

軽金属論文賞, XAFS測定を用いたAl-Mg-Si合金における二段時効の負の効果に及ぼすSnの影響の解明, 軽金属学会

田中芹奈、足立大樹
Nov, 2021

軽金属論文賞, 試験機揺動による粗大粒アルミニウムにおける引張変形中の転位密度変化In-situ XRD測定

足立大樹, 溝脇大史, 平田雅裕, 岡井大祐, 中西英貴
2021

日本鋳造工学会論文賞

井上達央, 伊東篤志, 足立大樹, 鳥塚史郎
2018

軽金属躍進賞, 軽金属学会

足立大樹
2009

軽金属奨励賞, 軽金属学会

足立大樹

Papers

146

Dynamics of Portevin-Le Chatelier banding revealed through grain refinement in high-Mn austenitic steel: Sequential overcoming of necking

Sukyoung Hwang, Myeong-heom Park, Yu Bai, Takumi Suzumura, Ryo Asada, Avala Lavakumar, Jesada Punyafu, Akinobu Shibata, Hiroki Adachi, Toshiyuki Fujii, Nobuhiro Tsuji

Journal of Materials Science & Technology, 254 234-248, May, 2026 Peer-reviewed
Variations in mechanical, electrical, thermal properties, and residual stress of laser powder bed fused Al–Fe binary alloy by annealing

Ryota Tatsumi, Yuki Hamasaki, Kayoko Yanagi, Toshihiko Sasaki, Kazuhiro Ishikawa, Hiroki Adachi, Dasom Kim, Naoki Takata, Yoji Miyajima

Journal of Materials Research and Technology, 39 7835-7846, Nov, 2025 Peer-reviewed
Controlling unique mechanical properties of aluminum alloys created by laser additive manufacturing

Naoki TAKATA, Hiroki ADACHI, Yoji MIYAJIMA

Journal of Japan Institute of Light Metals, 75(4) 199-208, Apr 15, 2025 Peer-reviewedInvitedCorresponding author
Effect of deformation temperature on the change in dislocation density during tensile deformation in industrial pure aluminum

Tatsuki OKIYAMA, Hiroki ADACHI

Journal of Japan Institute of Light Metals, 75(3) 151-155, Mar 15, 2025 Peer-reviewedLast authorCorresponding author
Improvement of Time Resolution in Visualization Technology for Crystal Structural Distribution of Metallic Materials

Kazuya Tokuda, Junji Iihara, Kazuhiro Goto, Hiroki Adachi

Advances in X-Ray Chemical Analysis, Japan, 56 97-104, Jan, 2025 Peer-reviewedLast author
Visualization of Local Deformation in Metallic Materials through In Situ X-Ray Diffraction Mapping

Kazuya Tokuda, Kazuhiro Goto, Junji Iihara, Hiroki Adachi

Materials Transactions, 66(1) 50-55, Jan, 2025 Peer-reviewedLast author
Investigation of the Cause of Serration Generation in Al-Mg Alloy Using In-situ XRD/DIC Simultaneous Measurement

Hiroki Adachi, Tatsuya Kitano, Masahiro Hirata, Daisuke Okai

Materials Transactions, 66(1) 117-122, Jan, 2025 Peer-reviewedLead authorCorresponding author
Measurement of Stress Partitioning Behavior of Electrodeposited Pure Ni/Ni Alloy Multi-Layered Sample During Tensile Deformation

Hiroki Adachi, Takaya Awane

12(4) 217-220, Dec, 2024 Peer-reviewedLead authorCorresponding author
Mechanism of DSA effect correlating to the macroscopic PLC banding in high-Mn austenitic steel

Sukyoung Hwang, Myeong-Heom Park, Yu Bai, Avala Lavakumar, Akinobu Shibata, Hiroki Adachi, Masugu Sato, Nobuhiro Tsuji

Scripta Materialia, 249 116183-116183, Aug, 2024 Peer-reviewed
Exploring unusual Lüders deformation in ultrafine-grained high-Mn austenitic steel

Sukyoung Hwang, Hirokazu Kato, Kazuho Okada, Myeong-heom Park, Avala Lavakumar, Reza Gholizadeh, Hiroki Adachi, Masugu Sato, Nobuhiro Tsuji

Materials Research Letters, 12(8) 571-579, Jun 2, 2024 Peer-reviewed
Effect of low-temperature annealing on electric resistivity and mechanical anisotropy of Al-Si binary alloy fabricated by laser-powder bed fusion

Yoichiro Konishi, Yuki Hamasaki, Toshihiko Sasaki, Hiroki Adachi, Kazuhiro Ishikawa, Dasom Kim, Naoki Takata, Yoji Miyajima

Journal of Alloys and Compounds, 982 173737, Apr 30, 2024 Peer-reviewed
Anisotropic Adhesive Interface Formed by the Spontaneous Orientation Behavior of Liquid Crystal Polymers

Mizuho Kondo, Tatsuki Nagata, Yukitaka Hyodo, Daisuke Okai, Hiroki Adachi, Nobuhiro Kawatsuki

Chemistry Letters, 53(4) upae066, Apr 4, 2024 Peer-reviewed
Microstructural origins of high strength of Al–Si alloy manufactured by laser powder bed fusion: In-situ synchrotron radiation X-ray diffraction approach

Naoki Takata, Mulin Liu, Masahiro Hirata, Asuka Suzuki, Makoto Kobashi, Masaki Kato, Hiroki Adachi

Journal of Materials Science and Technology, 178 80-89, Apr, 2024 Peer-reviewedLast authorCorresponding author
Effect of microstructure on yield phenomenon of aluminum alloys

Hiroki Adachi

Keikinzoku/Journal of Japan Institute of Light Metals, 73(12) 570-575, Dec 15, 2023 Peer-reviewedInvitedLead authorCorresponding author
Investigation of the cause of serration generation in Al-Mg alloy using In-situ XRD/DIC simultaneous measurement

Hiroki Adachi, Tatsuya Kitano, Masahiro Hirata, Daisuke Okai

Keikinzoku/Journal of Japan Institute of Light Metals, 73(12) 628-632, Dec 15, 2023 Peer-reviewedLead authorCorresponding author
構造材料の放射光を利用した先端計測構造用金属材料の放射光を利用した変形挙動解析

足立大樹

マテリアルライフ学会誌, 35(3) 61-65, Oct 31, 2023 Peer-reviewedInvitedLead authorCorresponding author
Effect of Precipitation Size on Dislocation Density Change during Tensile Deformation in Al-Zn-Mg Alloy

Masahiro Hirata, Koichi Iwata, Daisuke Okai, Hiroki Adachi

Materials Transactions, 64(11) 2584-2590, Aug 25, 2023 Peer-reviewedLast authorCorresponding author
The Effect of Serration Behavior on Strain Hardening and Deformation in 22Mn-0.6C Steel

Sukyoung Hwang, Park Myeong-Heom, Yu Bai, Akinobu Shibata, Hiroki Adachi, Masugu Sato, Nobuhiro Tsuji

International Symposium on New Developments in Advanced High-Strength Sheet Steels, AHSS 2023, 119-124, Jun 19, 2023 Peer-reviewed
Role of surrounding phases on deformation-induced martensitic transformation of retained austenite in multi-phase TRIP steel

Avala Lavakumar, Myeong heom Park, Sukyoung Hwang, Hiroki Adachi, Masugu Sato, Ranjit Kumar Ray, Mitsuhiro Murayama, Nobuhiro Tsuji

Materials Science and Engineering A, 874 145089, May 25, 2023 Peer-reviewed
Investigation of Nano-Cluster Structure in Al-Zn-Mg Alloys by Using Soft X-ray XAFS

田中芹奈, 西出創, 足立大樹

SPring-8/SACLA利用研究成果集(Web), 11(2) 135-138, Apr 28, 2023 Peer-reviewedInvitedLast author
Soft X-ray XAFS Analysis of Cluster Formation Process during 353K Aging in AlMgSi Alloys

Serina Tanaka, Hiroki Adachi

Materials Transactions, 64(2) 458-466, Jan 25, 2023 Peer-reviewedLast author
Deformation Behavior Analysis of FCC Metals by Using Synchrotron Radiation

Hiroki Adachi

61(12) 864-869, Dec, 2022 InvitedLead authorCorresponding author
High strength and low electrical resistivity of Al-0.1 at%Ni alloys produced by accumulative roll bonding

Yoji Miyajima, Taisei Homma, Souichiro Takenaka, Chihiro Watanabe, Hiroki Adachi, Kazuhiro Ishikawa

Materials Today Communications, 33, Dec, 2022 Peer-reviewed
Destruction of mesoscopic chemically modulated domains in single phase high entropy alloy via plastic deformation

Yoji Miyajima, Tomohiro Nagata, Kohei Takeda, Shuhei Yoshida, Satoshi Yasuno, Chihiro Watanabe, Ishikawa Kazuhiro, Hiroki Adachi, Nobuhiro Tsuji

Scientific Reports, 12(1), Dec, 2022 Peer-reviewed
Si-addition contributes to overcoming the strength-ductility trade-off in high-entropy alloys

Daixiu Wei, Wu Gong, Tomohito Tsuru, Ivan Lobzenko, Xiaoqing Li, Stefanus Harjo, Takuro Kawasaki, Hyeon-Seok Do, Jae Wung Bae, Christian Wagner, Guillaume Laplanche, Yuichiro Koizumi, Hiroki Adachi, Kenta Aoyagi, Akihiko Chiba, Byeong-Joo Lee, Hyoung Seop Kim, Hidemi Kato

International Journal of Plasticity, 159, Dec, 2022 Peer-reviewed
Photoinduced phase transition and subsequent change in adhesion property of cyanostilbene liquid crystalline polymer composite

Mizuho Kondo, Shika So, Tatsuki Nagata, Hiroki Adachi, Daisuke Okai, Nobuhiro Kawatsuki

2022 29th International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD), 132-135, Jul 5, 2022 Peer-reviewed
Photoinduced phase transition of N-benzylideneaniline liquid crystalline polymer and applications of photodismantlable adhesives

Mizuho Kondo, Takehiro Uematsu, Naoya Ootsuki, Daisuke Okai, Hiroki Adachi, Nobuhiro Kawatsuki

Reactive and Functional Polymers, 174, May, 2022 Peer-reviewed
Synchrotron X-ray Study on Plaston in Metals

Hiroki Adachi

The Plaston Concept: Plastic Deformation in Structural Materials, 197-212, Jan 1, 2022 Peer-reviewedLead authorCorresponding author
Evaluation of change in dislocation substructure during tensile deformation in 1200 aluminum by using In-situ XRD measurement

Hiroki Adachi, Shunsuke Takahashi, Masahiro Hirata, Daisuke Okai

Keikinzoku/Journal of Japan Institute of Light Metals, 72(5) 274-276, 2022 Lead authorCorresponding author
Effect of heat treatment on solute Si content in Al-12%Si alloy additive-manufactured by laser powder bed fusion

Naoki Takata, Mulin Liu, Asuka Suzuki, Makoto Kobashi, Masaki Kato, Shumpei Iwai, Hiroki Adachi

Keikinzoku/Journal of Japan Institute of Light Metals, 72(5) 178-184, 2022 Last authorCorresponding author
Investigation of the role of Sn on negative effect in two-step aging in an Al-Mg-Si alloy by XAFS analysis

Serina Tanaka, Hiroki Adachi

Keikinzoku/Journal of Japan Institute of Light Metals, 72(10) 593-599, 2022
A Comparison Study of Electrical Resistivity, Vickers Hardness, and Microstructures of Alloy 625 Prior and Posterior to Rolling

Tomohiro Nagata, Kohei Takeda, Hiroki Adachi, Kazuhiro Ishikawa, Yoji Miyajima

Materials Transactions, 63(3) 278-285, 2022 Peer-reviewed
Unique transition of yielding mechanism and unexpected activation of deformation twinning in ultrafine grained Fe-31Mn-3Al-3Si alloy

Yu Bai, Hiroki Kitamura, Si Gao, Yanzhong Tian, Nokeun Park, Myeong heom Park, Hiroki Adachi, Akinobu Shibata, Masugu Sato, Mitsuhiro Murayama, Nobuhiro Tsuji

Scientific Reports, 11(1), Dec, 2021
Magnetic property of Al-Mg alloys and intermetallic compounds

Katsuhiko Nishimura, Kosuke Imai, Kenji Matsuda, Norio Nunomura, Taiki Tsuchiya, Yosikazu Isikawa, Hiroki Adachi, Wayne D. Hutchison

Journal of Alloys and Compounds, 877, Oct 5, 2021
Soft X-ray XAFS analysis of cluster formation behavior during natural aging on an Al-Mg-Si Alloy

Serina Tanaka, Hiroki Adachi, Takehiro Nonomura

Materials Transactions, 62(10) 1448-1456, Oct 1, 2021
Microstructural control

軽金属, 71(8) 366-368, Aug, 2021 Lead authorCorresponding author
Soft X-ray XAFS analysis of cluster formation behavior during natural aging on an Al-Mg-Si alloy

田中芹奈, 足立大樹, 野々村壮紘, 野々村壮紘

軽金属, 71(3) 144-151, Mar, 2021 Peer-reviewed
Dependence of the mechanical properties and microstructure of ultralight magnesium–lithium–aluminum alloy on heat treatment conditions

Takahiro Mineta, Kazuma Kumatani, Hiroki Adachi, Hiroyuki Sato

Material Science and Engineering Technology, 52(3) 339-345, Mar, 2021 Peer-reviewed
Mesoscopic nature of serration behavior in high-Mn austenitic steel

Sukyoung Hwang, Myeong heom Park, Yu Bai, Akinobu Shibata, Wenqi Mao, Hiroki Adachi, Masugu Sato, Nobuhiro Tsuji

Acta Materialia, 205, Feb 15, 2021 Peer-reviewed
時効条件が異なるAl-Mg-Si合金における軟X線XAFS測定—Soft X-ray XAFS Studies on Al-Mg-Si Alloys with Different Aging Conditions

UACJ Technical Reports, 8(1) 10-15, 2021 Lead author
Characteristics of Cube Orientation for Pure Iron Tape Fabricated by Cold Rolling and Annealing

Daisuke Okai, Atsushi Yamamoto, Toshiya Doi, Hiroki Adachi

Materials Science Forum, 1016 1830-1834, Jan, 2021 Peer-reviewedLast author

A pure iron tape with cube orientation was fabricated by cold rolling and annealing. The orientation characteristics of the pure iron tape were evaluated using electron back-scattering diffraction (EBSD) analysis. The secondary recrystallized grains with cube orientation was formed on the tape surface for the pure iron tape. The coarse grains with a grain size of ca. 1mm were observed on the tape surface. The areal fraction of cube orientations with an angular deviation ≤ 20 ̊ amounts to ca. 81%.
Change in electrical resistivity in nickel processed by accumulative roll bonding

Yoji Miyajima, Taro Ueda, Hiroki Adachi, Toshiyuki Fujii

Materials Transactions, 62(8) 1247-1252, 2021
Effect of precipitation size on dislocation density change during tensile deformation in Al-Zn-Mg alloy

Masahiro Hirata, Koichi Iwata, Daisuke Okada, Hiroki Adachi

Keikinzoku/Journal of Japan Institute of Light Metals, 71(8) 343-348, 2021
A comparison study of electrical resistivity, vickers hardness, and microstructures of alloy 625 prior and posterior to rolling

Tomohiro Nagata, Kohei Takeda, Hiroki Adachi, Kazuhiro Ishikawa, Yoji Miyajima

Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, 85(10) 391-398, 2021
Secondary Recrystallization of Grains with Cube Orientation for Pure Iron Tape

D. Okai, A. Yamamoto, T. Doi, H. Adachi

IOP Materials Science and Engineering, 1121 012039, 2021 Peer-reviewedLast author
Evaluation of active slip systems during deformation by In-situ XRD in precipitation hardening Mg Alloys

Tomoki Yoshikawa, Masahiro Hirata, Daisuke Okai, Hiroki Adachi

IOP Materials Science and Engineering, 1121 012044, 2021 Peer-reviewedLast author
Using synchrotron radiation XRD technique to investigate active slip systems during tensile deformation in pure magnesium

Masahiro Hirata, Daisuke Okai, Hiroki Adachi

IOP Materials Science and Engineering, 1121 012043, 2021 Peer-reviewedLast author
Measurement of dislocation density change during tensile deformation in coarse-grained aluminum by in-situ XRD technique with tester oscillation⁺1

Hiroki Adachi, Hiroshi Mizowaki, Masahiro Hirata, Daisuke Okai, Hidetaka Nakanishi

Materials Transactions, 62(1) 62-68, Jan 1, 2021 Peer-reviewed
Tensile deformation of ultrafine-grained Fe-Mn-Al-Ni-C alloy studied by in situ synchrotron radiation X-ray diffraction

Si Gao, Takuma Yoshimura, Wenqi Mao, Yu Bai, Wu Gong, Myeong Heom Park, Akinobu Shibata, Hiroki Adachi, Masugu Sato, Nobuhiro Tsuji

Crystals, 10(12) 1-15, Dec, 2020 Peer-reviewed
Temperature and strain-rate dependence of flow stress of nanocrystalline nickel fabricated by electrolytic deposition

Yoji Miyajima, Ryu Ichikawa, Hiroki Adachi, Tohru Yamasaki, Toshiyuki Fujii, Masaharu Kato

Philosophical Magazine Letters, 100(12) 571-580, Dec, 2020 Peer-reviewed

Major Misc.

放射光を用いたHPT加工を施したAZ31Bマグネシウム合金における引張試験中の変形モード変化その場測定

藤本隆誠, 平田雅裕, 足立大樹

日本金属学会講演大会(Web), 173rd, 2023
超微細粒アルミニウムとニッケルにおけるIn-situ XRD測定を用いた引張変形中の弾塑性変形挙動観察

足立大樹, 岡田将秀, 中山翔太, 宮嶋陽司

日本金属学会講演概要(CD-ROM), 159th, 2016

Books and Other Publications

The Plaston Concept: Plastic Deformation in Structural Materials

(Role: Joint author, Synchrotron X-ray Study on Plaston in Metals)

Jan 26, 2022 (ISBN: 981167714X)
ナノコンポジットマテリアル : 金属・セラミック・ポリマー3大物質のナノコンポジット

(Role: Joint author)

フロンティア出版, Nov, 2005 (ISBN: 4902410060)

Major Presentations

328

放射光を用いた軽金属材料の弾塑性変形挙動解析

足立大樹

第146回春期軽金属学会, May 12, 2024 Invited
放射光In-situ XRD測定を用いた純アルミニウムにおけるリューダース変形中の微細組織変化解析

足立大樹, 井上格

第174回春期金属学会, Mar 13, 2024
放射光を用いたアルミニウム合金における降伏点降下現象とリューダース変形挙動の解析

足立大樹, 井上格, 平田雅裕, 岡井大祐

第145回秋期軽金属学会, Nov 11, 2023
引張変形中のin-situ XRD測定を用いたAl-Si積層造形体の強度特性解析

足立大樹, 岩井駿平, 劉牧霖, 高田尚記, 小橋眞

第57回X線材料強度に関するシンポジウム, Jul 21, 2023

Major Professional Memberships

- Present

日本鉄鋼協会
- Present

軽金属学会
- Present

日本金属学会

Major Research Projects

Strengthening Principle of Innovative Heat-Resistant Aluminum Alloys Created by 3D Printing Technology

Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2024 - Mar, 2028
Establishment of design guidelines for high specific strength and high conductivity aluminum alloys based on grain refinement

Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2024 - Mar, 2027
形態制御された硬質相を有する高加工硬化能アルミニウム合金積層造形体の創製

科学研究費助成事業, 日本学術振興会, Apr, 2023 - Mar, 2026

足立大樹
Deformation Mechanism of Nanostructured Dual Phase Steels Composed of Soft and Hard Phases ~ control of mechanical properties based on heterogeneity

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Japan Society for the Promotion of Science, Apr, 2020 - Mar, 2023

Tsuji Nobuhiro

To the list screen