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Investigation into the degradation mechanism of environmental embrittlement using integrated in-situ nano mechanical testing

Research Project

Project/Area Number 20360054
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionOsaka University

Principal Investigator

MINOSHIMA Kohji  Osaka University, 工学研究科, 教授 (50174107)

Co-Investigator(Kenkyū-buntansha) HIRAKATA Hiroyuki  大阪大学, 工学研究科, 准教授 (40362454)
YONEZU Akio  大阪大学, 工学研究科, 助教 (40398566)
Project Period (FY) 2008 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥19,890,000 (Direct Cost: ¥15,300,000、Indirect Cost: ¥4,590,000)
Fiscal Year 2010: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2009: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2008: ¥12,090,000 (Direct Cost: ¥9,300,000、Indirect Cost: ¥2,790,000)
Keywordsその場観察 / ナノメカニカルテスティング / 水素ぜい化 / 高強度材料 / 塑性特性 / 環境ぜい化
Research Abstract

In the light of plastic deformation at nano scale, this study investigated the mechanism of hydrogen embrittlement which is caused by hydrogen diffusion into a material. Nano indentation applying to high strength steels and model materials revealed that hydrogen absorption enhanced plastic deformation. This finding was also observed in the interfacial fracture toughness test, indicating that plastic deformation of thin film (which surrounds crack propagation) was promoted by hydrogen absorption, leading the variation in apparent fracture toughness.

Report

(4 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (21 results)

All 2011 2010 2009 Other

All Journal Article (8 results) (of which Peer Reviewed: 8 results) Presentation (12 results) Remarks (1 results)

  • [Journal Article] Influence of activation energy and sensitivity to hydrogen embrittlement on fatigue strength degradation by irreversible hydrogen in high-strength steels2011

    • Author(s)
      中谷正憲, 箕島弘二
    • Journal Title

      Fatigue & Fracture of Engineering Materials and Structures Vol 34, Issue 5

      Pages: 363-373

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Fatigue Strength Degradation by Irreversible Hydrogen in Cold Drawn Eutectoid Steels2011

    • Author(s)
      中谷正憲, 箕島弘二
    • Journal Title

      Key Engineering Materials Vols.462-463

      Pages: 188-193

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] 非拡散性水素吸蔵条件下における伸線強加工高強度鋼の疲労き裂進展特性と脱離水素の可視化2010

    • Author(s)
      中谷正憲, 藤原弘章, 崎原雅之, 箕島弘二
    • Journal Title

      日本機械学会論文集A編 Vol.76, No.769

      Pages: 1214-1220

    • NAID

      110007730357

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Hydrogen Effect on Fracture Toughness of Thin Film/Substrate Interfaces2010

    • Author(s)
      Hiroyuki Hirakata, Takeshi Yamada, Yoshiki Nobuhara, Akio Yonezu, Kohji Minoshima
    • Journal Title

      Engineering Fracture Mechanics Vol.77

      Pages: 803-818

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] On Hydrogen-induced Vickers Indentation Cracking in High-strength Steel2010

    • Author(s)
      Akio Yonezu, Masanori Arino, Toshiyuki Kondo, Hiroyuki Hirakata, Kohji Minoshima
    • Journal Title

      Mechanics Research Communications Vol.37

      Pages: 230-234

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] 非拡散性水素吸蔵条件下における伸線強加工高強度鋼の疲労き裂進展特性と脱離水素の可視化2010

    • Author(s)
      中谷正憲, 藤原弘章, 崎原雅之, 箕島弘二
    • Journal Title

      日本機械学会論文集A編

      Volume: 76 Pages: 1214-1220

    • NAID

      110007730357

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hydrogen Effect on Fracture Toughness of Thin Film/Substrate Interfaces2010

    • Author(s)
      Hiroyuki Hirakata
    • Journal Title

      Engineering Fracture Mechanics Vol.77

      Pages: 803-818

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Oh Hydrogen-Induced Vickers Indentation Cracking in High-Strength Steel2010

    • Author(s)
      Akio Yonezu
    • Journal Title

      Mechanics Research Communications (印刷中)

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] 非拡散性水素脱離による高強度鋼の疲労き裂進展の加速と脱離の力学条件2010

    • Author(s)
      中谷正憲, 藤原弘章, 崎原雅之, 箕島弘二
    • Organizer
      疲労シンポジウム
    • Place of Presentation
      高知城ホール(高知市)
    • Year and Date
      2010-10-28
    • Related Report
      2010 Annual Research Report
  • [Presentation] 伸線強加工高強度鋼の疲労き裂進展特性に及ぼす非拡散性水素の影響と脱離水素の可視化2010

    • Author(s)
      中谷正憲, 藤原弘章, 崎原雅之, 箕島弘二
    • Organizer
      CAMP-ISIJシンポジウム「水素脆化研究の基盤構築を目指して」
    • Place of Presentation
      北海道大学(札幌市)
    • Year and Date
      2010-09-26
    • Related Report
      2010 Annual Research Report
  • [Presentation] Evaluation of Susceptibility to Hydrogen Embrittlement Cracking in High Strength Steel using Indentation Test2009

    • Author(s)
      米津明生, 有野雅規, 近藤俊之, 平方寛之, 箕島弘二
    • Organizer
      2009 ASME International Mechanical Engineering Congress & Exposition.
    • Place of Presentation
      Orland, FL
    • Year and Date
      2009-11-17
    • Related Report
      2010 Final Research Report
  • [Presentation] Acoustic Emission from Hydrogen Embrittlement Cracking in Maraging Steel subjected to Contact Loading2009

    • Author(s)
      米津明生, 有野雅規, 近藤俊之, 平方寛之, 箕島弘二
    • Organizer
      The 13th Asia-Pacific Conference on Non-Destructive Testing.
    • Place of Presentation
      Yokohama
    • Year and Date
      2009-11-14
    • Related Report
      2010 Final Research Report
  • [Presentation] 押込み法による水素ぜい化き裂発生強度特性の評価2009

    • Author(s)
      米津明生, 有野雅規, 近藤俊之, 平方寛之, 箕島弘二
    • Organizer
      腐食防食協会材料と環境討論会
    • Year and Date
      2009-09-28
    • Related Report
      2010 Final Research Report
  • [Presentation] 押込み法による水素ぜい化き裂発生強度特性の評価2009

    • Author(s)
      米津明生
    • Organizer
      腐食防食協会第56回材料と環境討論会
    • Place of Presentation
      大阪府立大学(堺市)
    • Year and Date
      2009-09-28
    • Related Report
      2009 Annual Research Report
  • [Presentation] 局所接触負荷による高強度鋼の水素ぜい化破壊機構2009

    • Author(s)
      米津明生, 有野雅規, 近藤俊之, 平方寛之, 箕島弘二
    • Organizer
      日本機械学会M&M2009
    • Year and Date
      2009-07-26
    • Related Report
      2010 Final Research Report
  • [Presentation] 局所接触負荷による高強度鋼の水素ぜい化破壊機構2009

    • Author(s)
      米津明生
    • Organizer
      日本機械学会M&M2009材料力学カンファレンス
    • Place of Presentation
      札幌コンベンションセンター(札幌市)
    • Year and Date
      2009-07-26
    • Related Report
      2009 Annual Research Report
  • [Presentation] ナノ塑性特性に及ぼす吸蔵水素の影響2009

    • Author(s)
      近藤俊之, 米津明生, 平方寛之, 箕島弘二
    • Organizer
      日本機械学会関西支部第84期定時総会講演会
    • Year and Date
      2009-03-16
    • Related Report
      2010 Final Research Report
  • [Presentation] ナノ薄膜と基板の界面破壊じん性に及ぼす吸蔵水素の影響2009

    • Author(s)
      山田剛司, 延原由起, 崎原雅之, 平方寛之, 箕島弘二
    • Organizer
      日本機械学会関西支部第84期定時総会講演会
    • Year and Date
      2009-03-16
    • Related Report
      2010 Final Research Report
  • [Presentation] ナノ塑性特性に及ぼす吸蔵水素の影響2009

    • Author(s)
      近藤 俊之
    • Organizer
      日本機械学会関西支部第84期定時総会講演会
    • Place of Presentation
      近畿大学本部キャンパス
    • Year and Date
      2009-03-16
    • Related Report
      2008 Annual Research Report
  • [Presentation] ナノ薄膜と基板の界面破壊じん性に及ぼす吸蔵水素の影響2009

    • Author(s)
      山田 剛司
    • Organizer
      日本機械学会関西支部第84期定時総会講演会
    • Place of Presentation
      近畿大学本部キャンパス
    • Year and Date
      2009-03-16
    • Related Report
      2008 Annual Research Report
  • [Remarks] ホームページ等

    • URL

      http://www-micro.mech.eng.osaka-u.ac.jp/home.html

    • Related Report
      2010 Final Research Report

URL: 

Published: 2008-04-01   Modified: 2016-04-21  

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