Microstructural and crystallographic study of hydrogen-assisted cracking in high strength PSB1080 steel

Xinfeng Li, Jin Zhang, Eiji Akiyama, Yanfei Wang, Qizhen Li

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The microstructural and crystallographic study of hydrogen-assisted cracking in high strength PSB1080 steel was conducted. The results indicate that the mechanical properties of PSB1080 steel are seriously deteriorated in the presence of hydrogen, which is ascribed to the coupling effect of hydrogen-assisted cracking from the O–Al–Si–Ca inclusion and accelerated phase transformation from the austenite to the martensite due to hydrogen. The hydrogen uncharged sample exhibits dimple fracture pattern, whereas the fracture surface of hydrogen charged sample consists of three zones, i.e., quasi-cleavage zone, a mixed zone of quasi-cleavage and dimple as well as dimple zone. Crystallographic orientation analysis beneath the three zones demonstrates that the proportion of low angle grain boundary is the highest, followed by high angle grain boundary and then medium angle grain boundary, and the high Kernel Average Misorientation region facilitates hydrogen-assisted crack propagation. Additionally, the grains oriented with {001}//ND, {110}//ND, {123}//ND exhibit the high possibility of hydrogen-assisted cracking. This suggests that these oriented grain textures should be reduced to design the resistance-hydrogen embrittlement alloys.

Original languageEnglish
Pages (from-to)17898-17911
Number of pages14
JournalInternational Journal of Hydrogen Energy
Volume43
Issue number37
DOIs
Publication statusPublished - 2018 Sep 13

Keywords

  • Brittle fracture
  • Crystallographic texture
  • Hydrogen embrittlement
  • PSB1080 steel

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Microstructural and crystallographic study of hydrogen-assisted cracking in high strength PSB1080 steel'. Together they form a unique fingerprint.

Cite this