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Effect of Hydrogen Gas on the Fatigue Strength of Candidate Material for Fuel Cell System

Research Project

Project/Area Number 13450049
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

NOGUCHI Hiroshi (2003-2004)  KYUSHU UNIVERSITY, Faculty of Engineering, Professor, 大学院・工学研究院, 教授 (80164680)

吉村 達彦 (2001-2002)  九州大学, 大学院・工学研究院, 教授 (40325501)

Co-Investigator(Kenkyū-buntansha) HIGASHIDA Kenji  KYUSHU UNIVERSITY, Faculty of Engineering, Associate Professor, 大学院・工学研究院, 助教授 (70156561)
ODA Yasuji  KYUSHU UNIVERSITY, Faculty of Engineering, Research Associate, 大学院・工学研究院, 助手 (20091340)
AONO Yuta  KYUSHU UNIVERSITY, Faculty of Engineering, Research Associate, 大学院・工学研究院, 助手 (70264075)
OHMI Yasuaki  Toyota Motor Corporation, Staff Engineer, 第一車両部, スタッフエンジニア(研究職)
野口 博司  九州大学, 大学院・工学研究院, 助教授 (80164680)
Project Period (FY) 2001 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2004: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2003: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2002: ¥700,000 (Direct Cost: ¥700,000)
KeywordsMetal fatigue / Hydrogen / Crack growth / Crack initiation / Fatigue limit / Stainless steel / Aluminum alloy / Pre-strain / アルミ合金 / その場観察 / 燃料電池 / 配管 / 疲労強度
Research Abstract

In order to know the guide to the rational design for the components under fatigue loading in the fuel cell system, some candidate materials were tested in air, in hydrogen gas and in nitrogen gas at the pressure of below 1MPa. Main results obtained are as follows.
1.Austenitic stainless steels SUS304 and SUS316L
(1)The effect of hydrogen on the rength of material is not clearly seen in strain-fatigue life diagram.
(2)Initiation life in hydrogen gas or in nitrogen gas is longer than that in air
(3)Hydrogen gas accelerates the crack growth rate. The degree of acceleration in SUS304 is higher than that in SUS316L
(4)Brittle facets on the fracture surface of SUS304 increase in hydrogen gas, however ductile transgranular fracture surface is predominant So it seems that the acceleration occurs in the ductile fracture surface. The facets do not clearly increase in SUS316L.
(5)Observation of striation on the fracture surface and the deformation behavior of crack tip, it seems that slip bands at the crack tip in hydrogen gas easily concentrate. The concentration of slip bands plays an important role for the acceleration of crack growth rate.
(6)The effect of hydrogen gas on the fatigue limit is not clearly seen.
2.Aluminum alloy A6061-T6
The effects of pre-strain on the fatigue characteristics of aluminum alloy A6061-T6 in air were investigated. The main results obtained are as follows.
(1)Slip bands and cracks occur due to pre-strainaring prior to the fatigue tests.
(2)The effect of pre-strain on the fatigue life is not clearly seen.
(3)The pre-strain affects the behavior of crack initiation or crack growth. The effect of pre-strain in hydrogen gas environment on the fatigue characteristics is a problem to be solved in near future.

Report

(5 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (16 results)

All 2005 2004 Other

All Journal Article (12 results) Publications (4 results)

  • [Journal Article] Effects of Hydrogen Environment on Fatigue Characteristics of 18Cr-8Ni Stainless Steel2005

    • Author(s)
      K.Kawamoto
    • Journal Title

      Materials Science.Forum 482

      Pages: 283-286

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] SUS304鋼の疲労特性に及ぼす水素雰囲気の影響2005

    • Author(s)
      河本恭平
    • Journal Title

      日本機械学会論文集(A編) 71

      Pages: 443-450

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Observation of hydrogen effects on fatigue crack growth behaviour in an 18Cr-8Ni austanitic stainless steel2005

    • Author(s)
      Y.Oda
    • Journal Title

      International Journal of Fracture 132

      Pages: 99-113

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Effects of Hydrogen Environment on Fatigue Characteristics of 18Cr-8Ni Stainless Steel2005

    • Author(s)
      K.Kawamoto, Y.Aoki, Y.Oda, T.Yoshimura, H.Noguchi, K.Higashida
    • Journal Title

      Materials Science Forum Vol.482

      Pages: 283-286

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Effects of Hydrogen Environment on Fatigue Characteristics in a Type 304 Stainless Steel2005

    • Author(s)
      K.Kawamoto, Y.Aoki, Y.Oda, H.Noguchi, K.Higashida
    • Journal Title

      Transactions of the Japan Society of Mechanical Engineers Vol.71

      Pages: 443-450

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Observation of hydrogen effects on fatigue crack growth behaviour in an 18Cr-8Ni austenitic stainless steel2005

    • Author(s)
      Y.Oda, H.Noguchi
    • Journal Title

      International Journal of Fracture Vol.132-No.2

      Pages: 99-113

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Effects of Hydrogen Environment on Fatigue Characteristics of 18Cr-8Ni Stainless Steel2005

    • Author(s)
      Kyohei.Kawamoto
    • Journal Title

      Materials Science Forum 482

      Pages: 283-286

    • Related Report
      2004 Annual Research Report
  • [Journal Article] SUS304鋼の疲労特性に及ぼす水素雰囲気の影響2005

    • Author(s)
      河本恭平
    • Journal Title

      日本機械学会論文集(A編) 71巻703号(掲載予定)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] オーステナイト系ステンレス鋼の疲労限度に及ぼす水素ガス雰囲気の影響2005

    • Author(s)
      越智和彦
    • Journal Title

      日本機械学会九州支部第58期総会講演会論文集 No.058-1

      Pages: 33-34

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 水素ガス雰囲気におけるオーステナイト系ステンレス鋼の疲労き破伝ぱ特性2005

    • Author(s)
      河本恭平
    • Journal Title

      日本機械学会九州支部第58期総会講演会論文集 No.058-1

      Pages: 35-36

    • Related Report
      2004 Annual Research Report
  • [Journal Article] アルミニウム合金A6061-T6における予ひずみと疲労強度の関係2005

    • Author(s)
      吉田太郎
    • Journal Title

      日本機械学会九州支部第58期総会講演会論文集 No.058-1

      Pages: 15-16

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 水素雰囲気下におけるオーステナイト系ステンレス鋼の疲労特性2004

    • Author(s)
      萩原聡佳
    • Journal Title

      第27回疲労シンポジウム講演論文集

      Pages: 161-164

    • Related Report
      2004 Annual Research Report
  • [Publications] 松山卓寛, 尾田安司, 野口博司, 東田賢二: "SUS304鋼の微小穴材の疲労き裂発生および疲労き裂伝ぱに及ぼす水素雰囲気の影響"日本機械学会九州支部第57期総会講演会講演論文集. (印刷中). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 尾田安司, 野口博司, 吉村達彦: "SUS304鋼の疲労特性におよぼす水素雰囲気の影響"日本機械学会材料力学部門講演会講演論文集. 799-800 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Taka.Yoshimura, T.Matsuyama, Y.Oda, Tatsu.Yoshimura, H.Noguchi: "In-situ SLM Observation of Austenitic Stainless Steel in Hydrogen Environment"Proc.Int.Conf. Mechanical Behaviour of Materials. (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 吉村孝史, 尾田安司, 吉村達彦, 野口博司: "水素雰囲気下におけるSUS304鋼の疲労挙動のその場観察"日本機械学会九州支部第56期総会講演論文集. (印刷中). (2003)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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