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 2026年5月査読有り
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 2025年11月査読有り
レーザ積層造形技術が創出するアルミニウム合金の新奇力学機能とその制御

高田尚記, 足立大樹, 宮嶋陽司

軽金属 75(4) 199-208 2025年4月15日査読有り招待有り責任著者
工業用純アルミニウムにおける引張変形中の転位密度変化に及ぼす変形温度の影響

沖山達季, 足立大樹

軽金属 75(3) 151-155 2025年3月15日査読有り最終著者責任著者
金属材料の結晶構造分布可視化技術の高速化

徳田一弥, 飯原順次, 後藤和宏, 足立大樹

X線分析の進歩 56 97-104 2025年1月査読有り最終著者
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 2025年1月査読有り最終著者
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 2025年1月査読有り筆頭著者責任著者
電界析出法により作製したNi/Ni-W合金多層膜の引張変形中における応力分配挙動の測定

足立大樹, 粟根昂也

SPring-8/SACLA利用研究成果集 12(4) 217-220 2024年12月査読有り筆頭著者責任著者
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 2024年8月査読有り
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 2024年6月2日査読有り
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 2024年4月30日査読有り
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 2024年4月4日査読有り
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 2024年4月査読有り最終著者責任著者
「アルミニウム合金の高強度化」アルミニウム合金の降伏現象に及ぼす微細組織の影響

足立大樹

軽金属 73(12) 570-575 2023年12月15日査読有り招待有り筆頭著者責任著者
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 2023年12月15日査読有り筆頭著者責任著者
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 2023年10月31日査読有り招待有り筆頭著者責任著者
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 2023年8月25日査読有り最終著者責任著者
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 2023年6月19日査読有り
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 2023年5月25日査読有り
軟X線 XAFS を用いた Al-Zn-Mg 合金において形成されるナノクラスタ構造の測定

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 2023年4月28日査読有り招待有り最終著者
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 2023年1月25日査読有り最終著者
放射光を用いたFCC金属材料の変形挙動解析

足立大樹

まてりあ 61(12) 864-869 2022年12月招待有り筆頭著者責任著者
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 2022年12月査読有り
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) 2022年12月査読有り
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 2022年12月査読有り
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 2022年7月5日査読有り
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 2022年5月査読有り
Synchrotron X-ray Study on Plaston in Metals

Hiroki Adachi

The Plaston Concept: Plastic Deformation in Structural Materials 197-212 2022年1月1日査読有り筆頭著者責任著者
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年筆頭著者責任著者
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年最終著者責任著者
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年
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年査読有り
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) 2021年12月
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 2021年10月5日
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 2021年10月1日
組織制御 : 年間レビュー

足立大樹

71(8) 366-368 2021年8月筆頭著者責任著者
軟X線XAFS測定を用いたAl-Mg-Si合金における自然時効によるクラスタ形成過程の解明

田中芹奈, 足立大樹, 野々村壮紘

軽金属 71(3) 144-151 2021年3月査読有り
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 2021年3月査読有り
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 2021年2月15日査読有り
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年筆頭著者
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 2021年1月査読有り最終著者

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年
Al-Zn-Mg合金における引張変形中の転位密度変化に及ぼす析出粒子サイズの影響

平田雅裕, 岩田晃一, 岡井大祐, 足立大樹

軽金属 71(8) 343-348 2021年
Alloy 625の圧延に伴う電気抵抗率とビッカース硬さ，組織の変化の比較

永田知裕, 竹田康平, 足立大樹, 石川和宏, 宮嶋陽司

日本金属学会誌 85(10) 391-398 2021年
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年査読有り最終著者
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年査読有り最終著者
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年査読有り最終著者
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 2021年1月1日査読有り
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 2020年12月査読有り
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 2020年12月査読有り