Effects of hydrogen and test frequency on fatigue properties of jis-sncm439 steel for storage cylinder of 70 Mpa hydrogen station

Hiroki Yano, Nobuhiro Homma, Yoshihiro Fukushima, Arnaud Macadre, Jader Furtado, Saburo Matsuoka

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Tension-compression fatigue tests on SNCM 439 steel for storage cylinder of 70 MPa hydrogen station were conducted under frequencies of 0.2, 2, 20 and 500 Hz with smooth specimens and specimens containing a small artificial hole. Hydrogen charging of the specimens was carried out by the hydrogen gas exposure method or the aqueous solution immersion method. The fatigue life of the hydroged charged specimens decreased in comparison with the uncharged specimens. The cluster of Al2O3 inclusions with the length of about 270 μm was at the fracture origins of smooth specimens. For the specimens containing a small artificial hole, it was observed an acceleration of fatigue crack growth rate for the hydrogen charged specimens when compared to the uncharged ones. However, it was verified that this acceleration rate has reached an upper limit, which was approximately 10 times the acceleration rate found for uncharged specimens. Considering this upper limit value of the acceleration of fatigue crack growth rate, the √area parameter model was applied to predict the fatigue strength of uncharged and hydrogen charged specimens.

Original languageEnglish
Pages (from-to)918-927
Number of pages10
JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume76
Issue number767
DOIs
Publication statusPublished - Jul 2010

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Steel
Hydrogen
Fatigue of materials
Fatigue crack propagation
Compaction
Gases

All Science Journal Classification (ASJC) codes

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

Cite this

Effects of hydrogen and test frequency on fatigue properties of jis-sncm439 steel for storage cylinder of 70 Mpa hydrogen station. / Yano, Hiroki; Homma, Nobuhiro; Fukushima, Yoshihiro; Macadre, Arnaud; Furtado, Jader; Matsuoka, Saburo.

In: Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, Vol. 76, No. 767, 07.2010, p. 918-927.

Research output: Contribution to journalArticle

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