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2013 Fiscal Year Final Research Report

Prevention of hydrogen embrittlement by the formation of reversed austenite layer in high strength stainless steel

Research Project

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Project/Area Number 24656415
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeSingle-year Grants
Research Field Structural/Functional materials
Research InstitutionKyushu University

Principal Investigator

TAKAKI setsuo  九州大学, 工学(系)研究科(研究院), 教授 (90150490)

Project Period (FY) 2012-04-01 – 2014-03-31
Keywords水素脆性
Research Abstract

In this research, a meta-stable austenitic stainless steel (Fe-16%Cr-10%Ni) was strengthened by deformation induced martensitic transformation and then only the surface of cold worked material was subjected to local induction heating to cause the reversion from martensite to austenite. As a result, it was found that the austenite layer can be formed in vicinity of the surface of the steel while leaving the martensite inside and the hydrogen permeation into material is effectively suppressed by the austenite layer with a moderate thickness.

  • Research Products

    (6 results)

All 2013 2012 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (4 results) Remarks (1 results)

  • [Journal Article] Effect of Grain Size on Thermal and Mechanical Stability of Austenite in Metastable Austenitic Stainless Steel2013

    • Author(s)
      Yoshikazu MATSUOKA, Tatsuya IWASAKI, Nobuo NAKADA, Toshihiro TSUCHIYAMA and Setsuo TAKAKI
    • Journal Title

      ISIJ International

      Volume: vol.53 Pages: 1224-1230

    • Peer Reviewed
  • [Presentation] Effect of grain size on mechanical stability of austenite in metastable austenitic stainless steel2013

    • Author(s)
      Yoshikazu MATSUOKA, Nobuo NAKADA, Toshihiro TSUCHIYAMA, Setsuo TAKAKI
    • Organizer
      THERMEC 2013
    • Year and Date
      2013-12-04
  • [Presentation] 組織傾斜化による準安定オーステナイト系ステンレスSUS304 鋼板の水素脆化の抑制とその設計指針2013

    • Author(s)
      岩永修一,香月裕太郎,坪井耕一,Macadre Arnaud,中田伸生,土山聡宏,高木節雄
    • Organizer
      日本鉄鋼協会 第166回秋季講演大会
    • Year and Date
      2013-09-18
  • [Presentation] 準安定オーステナイト系ステンレス鋼の熱的・機械的安定性に及ぼす結晶粒径の影響2012

    • Author(s)
      中田伸生,岩崎竜也,松岡禎和,土山聡宏,高木節雄
    • Organizer
      日本鉄鋼協会第164回秋季講演大会
    • Year and Date
      2012-09-19
  • [Presentation] Inhomogeneous Deformation-Inducced Martensitic Transformation behavior of Retained Austenite Dispersed in Martensitic Stainless Steel2012

    • Author(s)
      Yoshikazu Matsuoka, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki
    • Organizer
      IUMRS-ICA2012
    • Year and Date
      2012-08-28
  • [Remarks]

    • URL

      http://takaki.zaiko.kyushu-u.ac.jp/

URL: 

Published: 2015-06-25  

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