Effect of hydrogen charging time on hydrogen blister and hydrogen-induced cracking of pure iron

Xinfeng Li, Weihong Huang, Xubin Wu, Jin Zhang, Yao Wang, Eiji Akiyama, Dewen Hou

Research output: Contribution to journalArticlepeer-review

Abstract

Hydrogen blister (HB) and hydrogen-induced cracking (HIC) of pure iron at various charging times were investigated. The results show that an increase in charging time leads to the increased HB height/width and HIC length/depth, and a change in hydrogen damage morphology. Subsurface HIC initiates and propagates along the grain boundaries, which makes the surface bend outwards to form blister on blister features, suggesting grain boundary cracking-induced blister-blister interaction mechanism. Crystallographic analysis demonstrates that adjacent grain boundary oriented-{100}//ND and {110}//ND exhibits the highest susceptibility to HIC, which offers a pathway to design hydrogen-resistant structural steels through the control of grain boundary.

Original languageEnglish
Article number109200
JournalCorrosion Science
Volume181
DOIs
Publication statusPublished - 2021 Apr 1

Keywords

  • A. Pure iron
  • C. Hydrogen blisters
  • C. Hydrogen embrittlement
  • C. Hydrogen-induced cracking

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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