研究成果・論文

2025年

Awards / 受賞

Under Construction

Presentation at International Conferences / 国際会議発表

  1. Enhancement of Hydrogen Storage Properties of AlTiVCr Light Weight High Entropy Alloys (HEA) by Ti3C2MXene and Severe Plastic Deformation

    Ludmila KUČEROVÁ, University of West Bohemia (WBU), Czech Karel SAKSL, Institute of Materials Research, Slovak Academy of Sciences (SAS), Slovakia Nobuhiro TSUJI, Kyoto University (KU), Japan
    JST CONCERT project
    2025.3.10
    Paris, France

  2. Double necking phenomenon in an FeCoCrV medium entropy alloy

    〇Si Gao, Yao Xiao, Jiankun Liu, Reza Gholizadeh, Myeong-Heom Park, Shuhei Yoshida, Wenqi Mao, Nobuhiro Tsuji
    Workshop on "Mechanical Behavior of Advanced Materials"
    2025.2.21
    The International Science Innovation Building, Kyoto University

  3. Possibility of Bulk Nanostructured Metals Managing Both High Strength and Large Ductility

    〇Nobuhiro Tsuji
    Seminar@IIT Madras
    2025.1.24
    IIT Madras, India

  4. Impact of Ultrafine Microstructures on Mechanical Properties in Various Kinds of Titanium Alloys

    〇Nobuhiro Tsuji、Yan Chong
    TMS2025 Annual Meeting@Las Vegas
    2025.3.25
    Las Vegas, Nevada, USA

  5. Exploring Unusual Lüders Deformation in UFG high-Mn Austenitic Steel

    〇Sukyoung Hwang、Hirokazu Kato、Kazuho Okada、Myeong-Heom Park、Nobuhiro Tsuji
    TMS2025 Annual Meeting@Las Vegas
    2025.3.25
    Las Vegas, Nevada, USA

  6. Characteristic Dislocation Slips in Polycrystalline HfNbTiZr Equi-Atomic Alloy

    Qiang He、Shuhei Yoshida、Shinji Okajyo、Masaki Tanaka、Nobuhiro Tsuji
    TMS2025 Annual Meeting@Las Vegas
    2025.3.26
    Las Vegas, Nevada, USA

  7. Influence of Annealing Atmosphere on Microstructural Evolution and Variations in Mechanical Properties and Electrical Conductivity During Isochronal Annealing in a Nanocrystalline Cu-Zr Alloy

    Takahiro Kunimine、Takeshi Inamura、Shuhei Yamaguchi、Naoya Nishikawa、Reza Gholizadeh、Nobuhiro Tsuji
    TMS2025 Annual Meeting@Las Vegas
    2025.3.26
    Las Vegas, Nevada, USA

  8. Real-Time Sub-Microscopic Observation and Atomic Simulation of Deformation Induced Martensitic Transformation at Grain Boundaries

    Jesada Punyafu、Tomotsugu Shimokawa、Myeong-Heom Park、Nobuhiro Tsuji、Mitsuhiro Murayama
    TMS2025 Annual Meeting@Las Vegas
    2025.3.27
    Las Vegas, Nevada, USA

  9. Alloy Design, Microstructure, and Mechanical Properties of CoFeNi Medium Entropy Alloy with Vanadium and Carbon Addition

    〇Hamshini Rajendran、Reza Gholizadeh、Yoshida Shuhei、Nobuhiro Tsuji
    TMS2025 Annual Meeting@Las Vegas
    2025.3.27
    Las Vegas, Nevada, USA

  10. Tensile Deformation Behavior of Polycrystalline Pure Cobalt With HCP / FCC Dual Phase Studied by In-Situ X-Ray Diffraction

    〇Takumi Suzumura、Si Gao、Shuhei Yoshida、Nobuhiro Tsuji
    TMS2025 Annual Meeting@Las Vegas
    2025.3.24
    Las Vegas, Nevada, USA

  11. Crytal Orientation Dependence of Dislocation Structure in Tensile-Deformed High Purity Iron

    〇Wing Sum Lau、Shuhei Yoshida、Nobuhiro Tsuji
    TMS2025 Annual Meeting@Las Vegas
    2025.3.25
    Las Vegas, Nevada, USA

  12. Effect of Titanium Addition on Mechanical Properties of Single-phase FCC High-entropy Alloys

    〇Chenliang Chu, Shuhei Yoshida, Reza Gholizadeh, Zhiqiang Fu, Hao Wang, Yan Chong, Xiaoxu Huang, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.3
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  13. Mechanisms of Abnormal Softening and Extra-hardening in Bulk Ultrafine-grained Metals

    〇Ruixiao Zheng, Maowen Liu, Jun-Ping Du, Wu Gong, Chaoli Ma, Shigenobu Ogata, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.3
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  14. Understanding the Tensile Behavior of a Cu-Fe Laminated Metal Composite by Unraveling the Individual Stress-Strain Responses of Cu and Fe Layers

    〇DONGSHENG FU, SI GAO, WENQI MAO, WU GONG, NOBUHIRO TSUJI
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.3
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  15. Superior strength–ductility synergy in three-dimensional heterogeneous-nanostructured metals

    〇Guodong Li, Ruixiao Zheng, Chaoli Ma, Xiaoyan Li, Si Gao, Ameyama Kei
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.3
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  16. Effects of lamellae direction on deformation behavior in directionally solidified AlCoCrFeNi2.1 eutectic high entropy alloy

    〇Jinge Yan, Shuhai Yoshida, Myeong-heom Park, Wu Gong, Stefanus Harjo, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.3
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  17. A newly additive-manufacturable Nickel-base superalloys with ultrahigh strength-ductility synergy

    〇Li Liang, Wei Tong, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.3
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  18. Elimination of oxygen-induced embrittlement in Ti -compositional and structural strategies

    〇Yan Chong, Reza Gholizadeh, Tomohito Tsuru, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.4
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  19. The interplay of deformation mechanisms and mechanical characteristics in interstitial-strengthened titanium alloys

    〇Guohua Zhao, Yan Chong, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.4
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  20. Grain refinement of LPSO phase using heavy deformation and subsequent recrystallization in Mg85Y8Zn7 alloy

    〇Chunyu Wang, Myeong-heom Park, Taiki Nakata, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.4
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  21. Grain Size Dependence of Twinning Behavior in Polycrystalline Pure Mg

    〇Saho Yako, Myeong-heom Park, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.4
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  22. Mitigating Lüders-band-related strain localization by designing austenite grains having bimodal stability in UFG-medium Mn steel

    〇Wei Ding, Wei Li, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.4
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  23. Evolution of Dislocation Structures and Their Crystal Orientation Dependence in Tensile-deformed High Purity Iron

    〇Wing Sum Lau, Shuhei Yoshida, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.5
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  24. Deformation behavior of an HCP-BCC dual-phase magnesium alloy at cryogenic temperatures

    〇Wu Gong, Reza GHOLIZADEH, Stefanus Harjo, Takuro Kawasaki, Kazuya Aizawa, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.5
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  25. Deformation Behavior, Microstructure, and Mechanical Property of Cold-Rolled and Annealed AlCoCrFeNi2-1 High-Entropy Alloy with Dual-Phase Structure

    〇Reza Gholizadeh, Koji Inoue, Shuhei Yoshida, Sheng Guo, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.5
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  26. Investigating strengthening behavior in carbide-enriched novel hypo eutectic high entropy alloy (CoFeNi)-V-C

    〇Hamshini R, Reza Gholizadeh, Shuhei Yoshida, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.5
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  27. Cyclic transformation strengthening in Fe-24Ni-0.3C metastable austenitic steels with different grain sizes

    〇Mayu Dono, Si Gao, Myeong-heom Park, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.5
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  28. Revisiting the role of chemical order on mechanical properties of Ni-Cr alloy

    〇Shuhei Yoshida, Daiki Tokiwa, Hikaru Saito, Yoji Miyajima, Mitsuhiro Murayama, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.6
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  29. Intrinsic mechanism of post-dynamic phase transformation from austenite to ferrite in-situ neutron diffraction

    〇Zelin Tong, Wei Li, Wei Ding, Baoqi Guo, Na Min, Huibin Liu, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.6
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  30. Effect of grain refinement on serration behavior in high-Mn austenitic steel

    〇Sukyoung Hwang, Ryo Asada, Myeong-heom Park, Akinobu Shibata, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.6
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  31. Deformation behavior of an ultrafine-grained stainless steel at cryogenic temperatures studied by in situ neutron diffraction

    〇Wenqi Mao, Si Gao, Wu Gong, Takuro Kawasaki, Stefanus Harjo, Nobuhiro Tsuji, Lijia Zhao, Qiang Wang
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.6
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  32. Effects of interstitial carbon on the strength and ductility of carbide free high-entropy alloys

    〇Wei Fang, Chang Liu, Shuhei Yoshida, Pingguang Xu, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.6
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  33. Microstructure and mechanical properties of heavily cold-rolled and annealed high entropy alloy with highly deformable Laves phase

    〇Pankaj Kumar Ojha, Upender Sunkari, Shuhei Yoshida, Nobuhiro Tsuji, Pinaki Prasad Bhattacharjee
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.6
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  34. Grain size dependence of deformation behavior and strengthening mechanisms in TiZrHf medium entropy alloy with HCP single phase

    〇Xiang LI, Shuhei YOSHIDA, Yan CHONG, Nobuhiro TSUJI
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.6
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  35. Strain localization behavior during tensile deformation of fine-grained 304 stainless steel

    〇Si Gao, Yu Bai, Ruixiao Zheng, Yanzhong Tian, Wenqi Mao, Akinobu Shibata, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.6
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  36. Simultaneous Enhancement of Strength and Ductility in Polycrystalline Pure Cobalt through Stabilizing High-Temperature FCC Phase

    〇Takumi Suzumura, Si Gao, Shuhei Yoshida, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.6
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  37. Local stress visualization by digital image correlation (DIC) technique

    〇Myeong-heom Park, Saho Yako, Akinobu Shibata, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.6
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  38. Microstructure Tailoring of High-Strength Fe-Mn-C Ghost Pearlite

    〇Marcel Muench, Lukas Reichherzer, Reza Gholizadeh, Nobuhiro Tsuji, Yolita M. Eggeler, Martin Heilmaier, Alexander Kauffmann
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.6
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  39. Investigation of Dynamic Hall-Petch Effect in High-Mn Austenitic Steel

    〇Taigi IITSUKA, Sukyoung Hwang, Myeong-heom Park, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.3
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  40. Quantitative investigation of local deformation behavior during Lüders deformation in low-carbon ferrite + pearlite steels

    〇Takehiro Kobayashi, Myeong-heom Park, Sukyoung Hwang, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.3
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  41. Effect of high-temperature compression on ultrafine α + θ pearlitic structures in medium Mn steels

    〇Kota Kato, Myeong-heom Park, Baoqi Guo, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.3
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  42. Tensile deformation of cold rolled Fe-Ni-C metastable austenitic steel investigated by in-situ synchrotron XRD

    〇Naoki Harada, Si Gao, Nobuhiro Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.3
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  43. Direct observation of dynamic transformation during hot deformation of Ti-6Al-4V alloy

    〇BQ. Guo, Y. Chong, WQ. Mao, S. Harjo, W. Gong, N. Tsuji
    ICSMA 20 The 20th International Conference on Strength of Materials
    2025.6.4
    Kyoto International Conference Center (Kyoto Kokusaikaikan), Kyoto, Japan

  44. Quantitative characterization of local deformation behavior in ferrite +martensite dual phase steels with different grain sizes by digital image correlation method

    〇Myeong-heom Park, Akinobu Shibata, Stefanus Harjo, Nobuhiro Tsuji
    GCIM2025 (Global Conference of Innovation Materials 2025)
    2025.6.16
    Jeju International convention center, Jeju, Korea

  45. Characteristic Dislocation Slips in Polycrystalline HfNbTiZr Medium Entropy Alloy

    〇Nobuhiro Tsuji, Qian He, Shuhei Yoshida, Shinji Okajyo, Masaki Tanaka
    THERMEC'2025 (International Conference on PROCESSING & MANUFACTURING OF ADVANCED MATERIALS Processing, Properties, Fabrication and Applications)
    2025.7.1
    The Faculty of Science & Techniques of the University of Tours, Tours, France

Presentation at Domestic Meetings / 国内学会発表

  1. CrCoNi および CrFeNi ミディアムエントロピー合金の電析挙動と微細組織の比較

    〇村上 勇樹、吉田 周平、西岡 季穂、辻 伸泰、邑瀬 邦明、深見 一弘
    日本金属学会2025年春期（第176回）講演大会
    公募シンポジウム講演｜S3.材料表面の化学 II －めっき・耐食性・耐酸化性・触媒研究の新展開－(1)
    2025.03.08
    東京都立大学南大沢キャンパス

  2. フェライト鋼におけるリューダース変形中の局所応力の定量解析

    〇小林 赳大、朴 明験、黄 錫永、辻 伸泰
    日本金属学会2025年春期（第176回）講演大会
    ポスターセッション｜4.力学特性｜力学特性
    2025.03.08
    東京都立大学南大沢キャンパス

  3. Evolution of deformation and annealing microstructures in dual-phase AlCoCrFeNi₂.₁ High-Entropy Alloy

    〇Reza Gholizadeh, Koji Inoue, Shuhei Yoshida, Sheng Guo, Nobuhiro Tsuji
    日本金属学会2025年春期（第176回）講演大会
    4.力学特性｜力学特性と組織｜ハイエントロピー合金
    2025.03.09
    東京都立大学南大沢キャンパス

  4. その場中性子回折測定による Cu-Fe ラミネート組織材の変形挙動の理 解

    〇付 東升、高 斯、ゴン ウー、毛 文奇、辻 伸泰
    日本金属学会2025年春期（第176回）講演大会
    4.力学特性｜力学特性と組織｜力学特性の基礎(1)
    2025.03.09
    東京都立大学南大沢キャンパス

  5. Microstructure and hydrogen storage properties of (TiVNb)85Cr15medium entropy alloy processed by severe plastic deformation

    〇Xu Shuo、Yoshida Shuhei、Dangwal Shivam、Saksl Karel、Kučerová Ludmila、Edalati Kaveh、Tsuji Nobuhiro
    日本金属学会2025年春期（第176回）講演大会
    10. エネルギー関連材料｜水素・電池関連材料｜水素・電池関連材料
    2025.03.09
    東京都立大学南大沢キャンパス

  6. Highly deformable Laves phase in a high entropy alloy

    〇Pankaj Kumar Ojha, Shuhei Yoshida, Upender Sunkari, Pinaki Prasad Bhattacharjee, Nobuhiro Tsuji
    日本金属学会2025年春期（第176回）講演大会
    公募シンポジウム講演｜S2 微小領域の力学特性評価とマルチスケールモデリング
    2025.03.09
    東京都立大学南大沢キャンパス

  7. デジタル画像相関法による TRIP 鋼のセレーション挙動の定量解析

    〇朴 明験、Hwang Sukyoung、興津 貴隆、辻 伸泰
    日本金属学会2025年春期（第176回）講演大会
    4.力学特性｜力学特性｜力学特性の基礎(2)
    2025.03.10
    東京都立大学南大沢キャンパス

  8. 純 Mg 微細粒材における双晶変形抑制機構の考察

    〇八子 早保、朴 明験、辻 伸泰
    日本金属学会2025年春期（第176回）講演大会
    4.力学特性｜力学特性｜力学特性の基礎(2)
    2025.03.10
    東京都立大学南大沢キャンパス

  9. その場中性子回折による極低温における Mg-Li 二相合金の変形機構の解明

    〇ゴン ウー、Reza Gholizadeh、ハルヨ ステファヌス、川崎 卓郎、相澤 一也、辻 伸泰
    日本金属学会2025年春期（第176回）講演大会
    4.力学特性｜力学特性｜力学特性の基礎(2)
    2025.03.10
    東京都立大学南大沢キャンパス

  10. 鋼の結晶粒超微細化のための加工熱処理

    〇辻 伸泰
    日本鉄鋼協会2025年春期（第189回）講演大会
    材料の組織と特性｜加工熱処理
    2025.03.08
    東京都立大学南大沢キャンパス

  11. 旧 γ 粒界における局所塑性緩和能力に対応したマルテンサイト鋼の水素脆化感受性

    ○岡田和歩・柴田曉伸、朴明験、津﨑兼彰
    日本鉄鋼協会2025年春期（第189回）講演大会
    討論会｜材料の組織と特性｜マルテンサイト鋼における局所塑性と関連する変形・破壊強度
    2025.03.09
    東京都立大学南大沢キャンパス

Seminars and Lectures / セミナー・講演

  1. 高Mn鋼におけるセレーション挙動および動的ひずみ時効のマルチスケールでの研究
    Sukyoung Hwang
    2025/03/04
    ソウル大学 材料工学部大学院
    大学院授業「構造材料深化研究」
  2. 高Mn鋼におけるセレーション挙動および動的ひずみ時効のマルチスケールでの研究
    Sukyoung Hwang
    2025/02/24
    成均館大学 新素材工学部大学院
    Prof. Kim Yunseok's laboratory
  3. Possibilities of Bulk Nanostructured Metals Managing Both High Strength and Large Ductility
    Nobuhiro Tsuji
    2025/01/31
    IIT Hyderabad, India
  4. Mechanism of Ultra Grain Refinement by Severe Plastic Deformation, and Other Fabrication Methods of Bulk Nanostructured Metals Using Thermomechanical Processing
    Nobuhiro Tsuji
    2025/01/29
    IIT Hyderabad, India
  5. Ultra Grain Refinement of Bulk Metallic Materials: Fabrication of Bulk Nanostructured Metals with Interesting Properties by Severe Plastic Deformation
    Nobuhiro Tsuji
    2025/01/27
    IIT Hyderabad, India
  6. ・Characteristic Dislocation Slips in Polycrystalline HfNbTiZr Equi-Atomic Alloy
    ・Possible Reason for Unexpected Dynamic Transformation
    Nobuhiro Tsuji
    2025/06/07
    京都リサーチパーク
  7. Understanding Degradation Mechanisms in Magnesium with Advanced Characterization
    Dmytro Orlov (Lund University, Sweden)
    2025/06/11
    京都大学
    科研費・国際先導の活動
  8. 熱処理を原子の次元で考える
    Nobuhiro Tsuji
    2025/06/11
    大阪科学技術センター
    第39回 熱処理技術者のための基礎講習会
  9. Understanding twinning-assisted strain hardening
    Alexey Vinogradov (Kumamoto University, Japan)
    2025/06/13
    京都大学
    科研費・国際先導の活動
  10. Elasto-Plastic Transition Mechanisms in Harmonic Structures
    Dmytro Orlov (Lund University, Sweden)
    2025/06/13
    京都大学
    科研費・国際先導の活動
  11. DIC法を利用した金属材料の不均一変形の定量評価
    Myeong-heom Park
    2025/06/23
    KIMS (Korea Institute of Materials Science), Changwon, Korea