Effect of reversed austenite on the stress corrosion cracking of modified 17-4PH stainless steel

Lianlian Wu, Yoichi Takeda, Tetsuo Shoji, Mitsuo Yamashita, Sakae Izumi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A study has been conducted investigating the effect of reversed austenite on the stress corrosion cracking property of a chemically modified 17-4PH with specially designed two-step tempering in a simulated geothermal environment. Two specimens with very similar 0.2% proof stress and different contents of reversed austenite were used to study the effect of reversed austenite on stress corrosion cracking (SCC). Slow strain rate testing (SSRT) with hydrogen precharged specimens and under cathodic polarization confirmed the detrimental effect of reversed austenite on hydrogen embrittlement. SSRT under anodic polarization confirmed the involvement of active path corrosion in the SCC of modified 17-4PH in a simulated geothermal environment, and showed that the effect of reversed austenite on active path corrosion was also detrimental. However, SSRT was not able to resolve the most impacted SCC property, SCC initiation, or SCC propagation.

Original languageEnglish
Pages (from-to)704-712
Number of pages9
JournalCorrosion
Volume73
Issue number6
DOIs
Publication statusPublished - 2017 Jun 1

Keywords

  • Active path corrosion
  • Hydrogen embrittlement
  • Reversed austenite
  • Slow strain rate testing
  • Stress corrosion cracking

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Effect of reversed austenite on the stress corrosion cracking of modified 17-4PH stainless steel'. Together they form a unique fingerprint.

Cite this