Fatigue limit of carbon and Cr–Mo steels as a small fatigue crack threshold in high-pressure hydrogen gas

Yuhei Ogawa, Hisao Matsunaga, Junichiro Yamabe, Michio Yoshikawa, Saburo Matsuoka

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

The fatigue limit properties of a carbon steel and a low-alloy Cr–Mo steel were investigated via fully-reversed tension-compression tests, using smooth specimens in air and in 115-MPa hydrogen gas. With respect to the Cr–Mo steel, specimens with sharp notches were also tested in order to investigate the threshold behavior of small cracks. The obtained S–N data inferred that the fatigue limit was not negatively affected by hydrogen in either of the steels. Observation of fatigue cracks in the unbroken specimens revealed that non-propagating cracks can exist even in 115-MPa hydrogen gas, and that the crack growth threshold is not degraded by hydrogen. The experimental results provide justification for the fatigue limit design of components that are to be exposed to high-pressure hydrogen gas.

Original languageEnglish
Pages (from-to)20133-20142
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume43
Issue number43
DOIs
Publication statusPublished - Oct 25 2018

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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