SSRT and fatigue crack growth properties of two types of high strength austenitic stainless steels in high pressure hydrogen gas

Hisatake Itoga, Takashi Matsuo, Akihiro Orita, Hisao Matsunaga, Saburo Matsuoka

研究成果: ジャーナルへの寄稿記事

8 引用 (Scopus)

抄録

The susceptibility to hydrogen embrittlement of two types of high strength austenitic stainless steels containing a small amount nitrogen and niobium were investigated by conducting a series of slow strain rate tests (SSRT) and fatigue crack growth tests in hydrogen gas with a pressure of around 100 MPa. The JIS-SUS304 and JIS-SUS316L austenitic stainless steels were also tested for a comparative purpose. In JIS-SUS304, the tensile strength and reduction of area in hydrogen gas were much lower than those in air. In contrast, in JIS-SUS316L, the degradation of those tensile properties in hydrogen gas was not so significant. The high strength austenitic stainless steels also exhibited an excellent resistance both in tensile strength and ductility in hydrogen gas. In JIS-SUS304, the fatigue crack growth in hydrogen gas was 10 times as fast as that in air, while the factor of acceleration remained within 1.5 - 3 in JIS-SUS316L and the high strength austenitic stainless steels. It was presumed that, in those high strength austenitic stainless steels, a small amount of added elements, N and Nb, increased the strength level as well as the stability of austenitic phase, which thereby led to the excellent resistance against hydrogen embrittlement.

元の言語英語
ページ(範囲)1726-1740
ページ数15
ジャーナルNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
79
発行部数808
DOI
出版物ステータス出版済み - 2013

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Austenitic stainless steel
Fatigue crack propagation
Strain rate
Hydrogen
Gases
Hydrogen embrittlement
Tensile strength
Niobium
Air
Tensile properties
Ductility
Nitrogen
Degradation
SUS 316L

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

これを引用

SSRT and fatigue crack growth properties of two types of high strength austenitic stainless steels in high pressure hydrogen gas. / Itoga, Hisatake; Matsuo, Takashi; Orita, Akihiro; Matsunaga, Hisao; Matsuoka, Saburo.

:: Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, 巻 79, 番号 808, 2013, p. 1726-1740.

研究成果: ジャーナルへの寄稿記事

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AU - Itoga, Hisatake

AU - Matsuo, Takashi

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AU - Matsunaga, Hisao

AU - Matsuoka, Saburo

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