Effect of absorbed hydrogen on the near threshold fatigue crack growth behavior of short crack

Keiko Shishime, Masanobu Kubota, Yoshiyuki Kondo

Research output: Contribution to journalConference article

13 Citations (Scopus)

Abstract

Hydrogen is considered to be a possible energy source in the coming future. However, it has been recognized that hydrogen has a detrimental effect on the fatigue strength of metal. The fatigue crack growth characteristic is an important property for the integrity assessment of hydrogen utilization machine. In this report, the effect of hydrogen on the fatigue crack propagation characteristic was studied using low alloy steel, carbon steels and A286 alloy. Especially in this study, very short pre-cracked specimen as small as 0.03 mm deep was used and the near threshold fatigue crack behavior was studied. As a result, materials whose Vickers hardness was higher than 300 were found to be susceptible to absorbed hydrogen.

Original languageEnglish
Pages (from-to)409-412
Number of pages4
JournalMaterials Science Forum
Volume567-568
Publication statusPublished - Feb 1 2008
Event5th International Conference on Materials Structure and Micromechanics of Fracture, MSMF-5 - Brno, Czech Republic
Duration: Jun 27 2007Jun 29 2007

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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