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Multi-scale modeling and experimental study for the mechanism of hydrogen embrittlement based on the theory of crack-tip shielding by dislocations

Research Project

Project/Area Number 18H03848
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 26:Materials engineering and related fields
Research InstitutionKyushu University (2021-2022)
Sasebo National College of Technology (2018-2020)

Principal Investigator

Higashida Kenji  九州大学, 鉄鋼リサーチセンター, 学術研究員 (70156561)

Co-Investigator(Kenkyū-buntansha) 西口 廣志  佐世保工業高等専門学校, 機械工学科, 准教授 (00580862)
川崎 仁晴  佐世保工業高等専門学校, 電気電子工学科, 教授 (10253494)
定松 直  鹿児島大学, 理工学域工学系, 准教授 (10709554)
下川 智嗣  金沢大学, 機械工学系, 教授 (40361977)
田中 將己  九州大学, 工学研究院, 教授 (40452809)
大橋 鉄也  北見工業大学, 工学部, 特任教授 (80312445)
Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥43,290,000 (Direct Cost: ¥33,300,000、Indirect Cost: ¥9,990,000)
Fiscal Year 2022: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2021: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2020: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2019: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2018: ¥21,710,000 (Direct Cost: ¥16,700,000、Indirect Cost: ¥5,010,000)
Keywords水素脆性 / き裂 / 転位 / 遮蔽効果 / 破壊靭性 / 水素脆化 / 亀裂 / 転位遮蔽効果 / 破壊 / 水素 / 靭性 / 応力遮蔽効果 / 脆化
Outline of Final Research Achievements

Hydrogen embrittlement has a major characteristic that distinguishes it from low-temperature embrittlement. The characteristic is that the fracture mode of hydrogen embrittlement is macroscopically brittle but microscopically ductile, and it is a contradictory phenomenon that is difficult to understand by conventional theories. In this study, we focused on the dislocation shielding effect, which has an essential influence on the fracture toughness of crystalline materials, and clarified the effect of hydrogen on the shielding effect. In addition, unique feature of this study is the use of silicon crystals, where the long-range stress field of dislocations can be visualized by using infrared light.

Academic Significance and Societal Importance of the Research Achievements

水素脆化は,社会基盤となる構造用金属材料の安全を脅かす深刻な問題であり,その原因解明は今後の水素社会の確立に向けて解決すべき重要な社会的課題である.本研究の学術的意義は,その脆化機構として,転位内部応力への水素の影響が重要であることを明確化したことにある.

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (61 results)

All 2023 2022 2021 2020 2019 2018

All Journal Article (17 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 16 results,  Open Access: 11 results) Presentation (44 results) (of which Int'l Joint Research: 18 results,  Invited: 6 results)

  • [Journal Article] Preparation of Ti and Fe Composition Gradient Thin Films by Sputtering with Mixed Powder Targets2023

    • Author(s)
      Tahahiko Satake, Hiroharu Kawasaki and Shinichi Aoqui
    • Journal Title

      e-Journal of Surface Science and Nanotechnology

      Volume: 21 Issue: 3 Pages: 218-223

    • DOI

      10.1380/ejssnt.2023-021

    • ISSN
      1348-0391
    • Year and Date
      2023-02-18
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of Crack-tip Shielding by Dislocations on Fracture Toughness – in Relation to Hydrogen Embrittlement –2022

    • Author(s)
      Kenji Higashida, Masaki Tanaka, Sunao Sadamatsu
    • Journal Title

      ISIJ International

      Volume: 62 Issue: 10 Pages: 2074-2080

    • DOI

      10.2355/isijinternational.ISIJINT-2022-237

    • ISSN
      0915-1559, 1347-5460
    • Year and Date
      2022-10-15
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Synergistic Effect of Different Plastic Deformation Modes: Molecular Dynamics Study on Strength of Crystalline/Amorphous Mixed Systems2022

    • Author(s)
      T. Shimokawa, K. Hara, T. Niiyama
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 63 Issue: 9 Pages: 1224-1231

    • DOI

      10.2320/matertrans.MT-Z2022007

    • NAID

      130008161745

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2022-09-01
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Molecular Dynamics Simulation of the Effect of Cementite Decomposition on Yield Phenomena in Pearlite Microstructure2022

    • Author(s)
      T. Shimokawa, T. Oto, T. Niiyama
    • Journal Title

      ISIJ International

      Volume: 62 Issue: 2 Pages: 343-352

    • DOI

      10.2355/isijinternational.ISIJINT-2021-357

    • NAID

      130008160456

    • ISSN
      0915-1559, 1347-5460
    • Year and Date
      2022-02-15
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of High-Pressure Hydrogen Gas Exposure on the Residual Stress Fields and Cracks around Vickers Indentations2022

    • Author(s)
      Hiroshi Nishiguchi , Masato Ino , Jun Fujise , Toshiaki Ono , Masaaki Tanaka, Kenji Higashida
    • Journal Title

      Procedia Structural Integrity

      Volume: 42 Pages: 1442-1448

    • DOI

      10.1016/j.prostr.2022.12.184

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 材料の力学的性質に関する教育と研究 ― 大学と高専を経験して ―2022

    • Author(s)
      東田賢二
    • Journal Title

      水曜會誌

      Volume: 25巻ダイ号 Pages: 416-424

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Atomistic Study of Disclinations in Nanostructured Metals2022

    • Author(s)
      Tomotsugu Shimokawa
    • Journal Title

      The Plaston Concept: Plastic Deformation in Structural Materials

      Volume: なし Pages: 57-78

    • DOI

      10.1007/978-981-16-7715-1_3

    • ISBN
      9789811677144, 9789811677151
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Preparation of functional thin films with elemental gradient by sputtering with mixed powder targets2021

    • Author(s)
      Hiroharu Kawasaki, Tamiko OHSHIMA, Yoshihito YAGYU, Takeshi Ihara, Kazuhiko Mitsuhashi, Hiroshi Nishiguchi and Yoshiaki Suda
    • Journal Title

      Jpn. J. Appl. Phys.

      Volume: 61 Issue: SA Pages: 1-4

    • DOI

      10.35848/1347-4065/ac1488

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 高専における放電プラズマネットワーク (小特集 高専における核融合および原子力に関する人材育成)2021

    • Author(s)
      川崎仁晴
    • Journal Title

      プラズマ・核融合学会誌

      Volume: 97(6) Pages: 313-318

    • NAID

      40022635590

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A novel work hardening mechanism of nanoscale materials by grain boundary transformation2021

    • Author(s)
      T. Shimokawa, T. Niiyama, T. Miyaki, M. Ikeda, K. Higashida
    • Journal Title

      Acta Materialia

      Volume: 224 Pages: 117536-117536

    • DOI

      10.1016/j.actamat.2021.117536

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tensile Deformation of Si Single Crystals at High Temperatures2021

    • Author(s)
      Suzuki Tubasa、Tanaka Masaki、Morikawa Tatsuya、Okuyama Yelm、Fujise Jun、Ono Toshiaki
    • Journal Title

      Materials Science Forum

      Volume: 1016 Pages: 1443-1447

    • DOI

      10.4028/www.scientific.net/msf.1016.1443

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mechanism Behind the Onset of Delamination in Wire-drawn Pearlitic Steels2020

    • Author(s)
      M. Tanaka, T. Manabe, T. Morikawa, K. Higashida
    • Journal Title

      ISIJ International

      Volume: 60 Issue: 11 Pages: 2596-2603

    • DOI

      10.2355/isijinternational.ISIJINT-2020-158

    • NAID

      130007940341

    • ISSN
      0915-1559, 1347-5460
    • Year and Date
      2020-11-15
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Preparation of Multielements Mixture Thin Film by One-Step Process Sputtering Deposition Using Mixture Powder Target2020

    • Author(s)
      Hiroharu Kawasaki, Tamiko Ohshima, Yoshihito Yagyu, Takeshi Ihara, Yoshiaki Suda
    • Journal Title

      IEEE Transactions on Plasma Science

      Volume: 49 Issue: 1 Pages: 48-52

    • DOI

      10.1109/tps.2020.3025306

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mechanism behind the Crack Formation in Hydrogen Doping Cz-Si Crystal Growth2019

    • Author(s)
      W. Sugimura, K. Takata, M. Tanaka, K. Higashida
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 60 Issue: 9 Pages: 1936-1942

    • DOI

      10.2320/matertrans.M2019046

    • NAID

      130007695347

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2019-09-01
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mechanism Behind the Onset of Delamination in Wire-drawn Pearlitic Steels2019

    • Author(s)
      田中將己,真鍋敏之,森川龍哉,東田賢二
    • Journal Title

      Tetsu-to-Hagane

      Volume: 105 Issue: 2 Pages: 155-162

    • DOI

      10.2355/tetsutohagane.TETSU-2018-106

    • NAID

      130007585428

    • ISSN
      0021-1575, 1883-2954
    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of Hydrogen and Surface Cracks on Tensile Properties of Torsional Prestrained Carbon-Steels2019

    • Author(s)
      Hiroshi Nishiguchi, Takayuki Fukuda, Masato Ino, Kenji Higashida
    • Journal Title

      Proceedings of the Twenty-ninth (2019) International Ocean and Polar Engineering Conference

      Volume: 4 Pages: 4161-4168

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Modelling and Crystal Plasticity Analysis for the Mechanical Response of Alloys with Non-uniformly Distributed Secondary Particles2019

    • Author(s)
      奥山彫夢,田中將己,大橋鉄也,森川龍哉
    • Journal Title

      Tetsu-to-Hagane

      Volume: 105 Issue: 2 Pages: 163-172

    • DOI

      10.2355/tetsutohagane.TETSU-2018-098

    • NAID

      130007585436

    • ISSN
      0021-1575, 1883-2954
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] 疲労現象に現れる転位壁と可動転位の相互作用に及ぼす 粒界の影響:原子モデルによる検討2023

    • Author(s)
      秋山拓哉,新山友暁,下川智嗣
    • Organizer
      日本金属学会2023年春期第172回講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] TWIP 現象における強度の最適双晶厚さに関する原子シミュレーション2023

    • Author(s)
      下川智嗣,Islam Mohammad Razzakul,新山友暁
    • Organizer
      日本金属学会2023年春期第172回講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 調和組織材料の強度に対する転位パイルアップモデルによる考察2023

    • Author(s)
      清田渓斗,新山友暁,下川智嗣
    • Organizer
      日本金属学会2023年春期第172回講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Trial of elemental gradient functional thin films preparation by sputtering with mixed powder targets II2023

    • Author(s)
      Hiroharu Kawasaki, Tamiko Ohshima, Yoshihito Yagyu, Takeshi Ihara, Yusuke Hibino, Takahiro Satake, Yoshiaki Suda
    • Organizer
      ISPlasma2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effects of High-Pressure Hydrogen Gas Exposure on the Residual Stress Fields and Cracks around Vickers Indentations2022

    • Author(s)
      Hiroshi Nishiguchi , Masato Ino , Jun Fujise , Toshiaki Ono , Masaaki Tanaka, Kenji Higashida
    • Organizer
      23rd European Conference on Fracture
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 多元系合金における粒界移動抵抗の遷移メカニズムに関する原子論的検討2022

    • Author(s)
      谷光平,新山友暁,下川智嗣
    • Organizer
      日本材料学会第7回マルチスケール材料力学シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 分子動力学法を用いた変形双晶核生成挙動の力学解析2022

    • Author(s)
      下川智嗣,村山光宏,辻伸泰
    • Organizer
      日本金属学会 2022年秋期 第171回講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 固執すべり帯を構成する転位組織の安定性に対する粒界の影響:分子動力学シミュレーションによる検討2022

    • Author(s)
      秋山拓哉,新山友暁,下川智嗣
    • Organizer
      日本金属学会 2022年秋期 第171回講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 変形双晶の核生成条件に関する原子シミュレーション2022

    • Author(s)
      下川智嗣
    • Organizer
      日本機械学会第35回計算力学講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Elemental gradient functional thin film production for hydrogen entry prevention using powder target2022

    • Author(s)
      Hiroharu Kawasaki, Tamiko Ohshima, Yoshihito Yagyu, Takeshi Ihara, Takahiko Satake, Yoshiaki Suda
    • Organizer
      ICRP-11
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Elemental gradient functional thin film production for hydrogen entry prevention using NiO powder target2022

    • Author(s)
      H. Kawasaki, T. Ohshima, Y. Yagyu, T. Ihara, Y.Hibino, T. Satake, Y. Suda
    • Organizer
      DPS2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ni and SUS mixture thin film preparation by sputteringusing NiO and SUS powder mixture target2022

    • Author(s)
      H. Kawasaki, T. Ohshima, Y. Yagyu, T. Ihara, Y. Hibino, Y. Suda, T. Satake, and S. Aoqui
    • Organizer
      ELMECO-2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ni and SUS mixture thin film preparation using NiO and SUS powder mixture target2022

    • Author(s)
      Hiroharu Kawasaki, Tamiko Ohshima, Yoshihito Yagyu, Takeshi Ihara, Yusuke Hibino, Yoshiaki Suda, Takahiko Satake and Shin-ichi Aoqui
    • Organizer
      IVC-22
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 粉体ターゲットプロセスによるFe, Ti混合傾斜機能性膜の作製2022

    • Author(s)
      川崎仁晴,大島多美子,柳生義人,猪原武士,日比野祐介,佐竹卓彦,青木振一
    • Organizer
      応用物理学会全国秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Preparation of elemental gradient functional thin films by using mixture powder targets III2022

    • Author(s)
      H. Kawasaki, T. Ohshima, Y. Yagyu, T. Ihara, Y. Hibino, T. Satake,Y. Suda
    • Organizer
      MRSJ2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Crack-tip Shielding by Dislocations Analyzed by HVEM and Its Effect on Fracture Toughness and Hydrogen Embrittlement2022

    • Author(s)
      K. Higashida, M. Tanaka
    • Organizer
      TMS2022(The Minerals, Metals and Materials Society)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Niをドープした金属表面への水素侵入防止傾斜機能性膜の作製2022

    • Author(s)
      川崎仁晴,大島多美子,柳生義人,猪原武士,西口廣志,佐竹卓彦,青木振一
    • Organizer
      プラズマプロセシング研究会(SPP)/プラズマ材料科学シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] Σ3粒界から変形双晶が形成する条件2022

    • Author(s)
      澤田健太郎,新山友暁,下川智嗣
    • Organizer
      日本金属学会2022年春期第170回講演大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 亀裂と転位の相互作用による破壊挙動の理解2022

    • Author(s)
      田中將己
    • Organizer
      日本鉄鋼協会183回春季講演大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 亀裂先端のプラストン2022

    • Author(s)
      田中將己
    • Organizer
      日本金属学会2022年春期(第170回)講演大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ELEMENTAL GRADIENT FUNCTIONAL THIN FILM PREPARATION BY SPUTTERING WITH MIXED POWDER TARGETS2021

    • Author(s)
      Hiroharu Kawasaki, Kouki Sumoto
    • Organizer
      The 5th International Symposium on Hybrid Materials and Processing(HyMap2021: Niigata:Nagaoka:Online)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 粉体ターゲットプラズマプロセスによる傾斜機能性膜の作製I2021

    • Author(s)
      川崎仁晴,大島多美子,柳生義人,猪原武士、日比野祐介、須本航輝,鴛淵梨花
    • Organizer
      第82回応用物理学会秋期講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Multi-elements mixture thin film preparation process by sputtering deposition using mixture powder target2021

    • Author(s)
      H. Kawasaki, T. Ohshima, Y. Yagyu, T. Ihara, Y.Hibino, Y. Suda
    • Organizer
      The 42nd International Symposium on Dry Process (DPS2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 粉体ターゲットプラズマプロセスを用いた傾斜機能性薄膜の作製2021

    • Author(s)
      川崎仁晴,大島多美子,柳生義人,猪原武士、日比野祐介、佐竹卓彦
    • Organizer
      第38回プラズマ核融合学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 粉体ターゲットスパッタリングによる傾斜機能性膜の作製II2021

    • Author(s)
      須本航輝,鴛淵梨花,川崎仁晴,大島多美子,柳生義人,猪原武士、日比野祐介
    • Organizer
      令和3年度応用物理学会九州支部学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Preparation of elemental gradient functional thin films by using mixture powder targets2021

    • Author(s)
      Hiroharu Kawasaki, Tamiko Ohshima, Yoshihito Yagyu, Takeshi Ihara, Yusuke Hibino, Yoshiaki Suda
    • Organizer
      MRM2021 Materials Research Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Lattice Defect Development in Harmonic Metals through Atomic Simulations2021

    • Author(s)
      Tomotsugu Shimokawa, Tatsuya Hasegawa, Tomoaki Niiyama
    • Organizer
      TMS2021(The Minerals, Metals and Materials Society)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 粒界を起点とした変形双晶の発生・成長に関する原子シミュレーション2021

    • Author(s)
      澤田健太郎,新山友暁,下川智嗣
    • Organizer
      日本金属学会2021年秋期第169回講演大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 粒径勾配領域の塑性伝播挙動に関する転位論・原子論的研究2021

    • Author(s)
      清田渓斗,新山友暁,下川智嗣
    • Organizer
      日本金属学会2021年秋期第169回講演大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 様々な変形モードの順次起動による高延性化に向けた2元系モデリング2021

    • Author(s)
      須田大貴,新山友暁,下川智嗣
    • Organizer
      日本機械学会第34回計算力学講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Niをドープした金属表面への水素侵入防止膜の作製2021

    • Author(s)
      川崎仁晴,大島多美子,柳生義人,猪原武士、西口廣志
    • Organizer
      第58回プラズマプロセッシングシンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] Trial of Ni-doped thin films production for preventing hydrogen embrittlement by sputtering deposition method with powder target2021

    • Author(s)
      HIROHARU KAWASAKI, TAMIKO OHSHIMA, YOSHIHITO YAGYU, TAKESHI IHARA
    • Organizer
      ISPlasma
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 粉体ターゲットを用いた傾斜機能性薄膜の作製I2021

    • Author(s)
      川崎仁晴,大島多美子,柳生義人,猪原武士、西口廣志
    • Organizer
      第66回応用物理学会春季講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Thin film preparation for preventing hydrogen embrittlement using sputtering deposition method2020

    • Author(s)
      Hiroharu KAWASAKI, Tamiko OHSHIMA, Yoshihito YAGYU, Takeshi IHARA, Hiroshi NISHIGUCHI
    • Organizer
      MRSJ WEB B-P09-009
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 粉体ターゲットプラズマプロセスによる水素脆性防止膜の試作II2020

    • Author(s)
      川崎仁晴,大島多美子,柳生義人,猪原武士、西口廣志
    • Organizer
      プラズマ核融合学会九州支部大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 気液混相流内ナノ秒パルス放電を用いた水素生成における生成エネルギー効率2020

    • Author(s)
      猪原武士、柳生義人、大島多美子、川崎仁晴
    • Organizer
      応用物理学会九州支部学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 応力遮蔽理論に基づく亀裂先端転位増殖機構2020

    • Author(s)
      田中將己, 定松直,
    • Organizer
      MRM Forum 2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] Temperature dependence of fatigue crack propagation in Ti-6Al-4V at different stress ratios2020

    • Author(s)
      B.R. Anne, T. Morikawa, M. Tanaka
    • Organizer
      日本金属学会2020年秋季(第167回)講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 超高圧電子顕微鏡法を用いた結晶格子欠陥の観察とその材料強度研究への応用2019

    • Author(s)
      東田賢二
    • Organizer
      2019年度精密工学会九州支部・中国四国支部共済「佐世保地方講演会」
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Effect of grain refinement due to severe plastic deformation on the behavior of brittle-to-ductile transition in a low carbon steel2019

    • Author(s)
      Kenji Higashida
    • Organizer
      10th Pacific Rim International Conference on Advance Materials and Processing (PRICM-10)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Effects of Hydrogen and Surface Cracks on Tensile Properties of Torsional Prestrained Carbon-Steels2019

    • Author(s)
      Hiroshi Nishiguchi, Takayuki Fukuda, Masato Ino, and Kenji Higashida
    • Organizer
      The 29th International Ocean and Polar Engineering Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Crack-tip dislocations and their shielding effect on fracture toughness2019

    • Author(s)
      Kenji Higashida, Masaki Tanaka
    • Organizer
      Hydrogen Materials Compatibility Research Division, 2019 Winter Retreat at I2CNER, Kyushu University
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 転位運動の熱活性化過程と降伏応力の温度依存性2019

    • Author(s)
      田中將己
    • Organizer
      第2回マルチスケール材料力学部門委員会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Crack-tip dislocations and their shielding effect on fracture toughness2018

    • Author(s)
      Kenji Higashida
    • Organizer
      The 4th Russia-Japan International Seminar on Advanced Materials
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2018-04-23   Modified: 2024-01-30  

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