Transgranular stress corrosion cracking of X-80 and X-52 pipeline steels in dilute aqueous solution with near-neutral pH

Journal Article · Mon Mar 01 04:00:00 EST 1999 · Corrosion

DOI:https://doi.org/10.5006/1.3283993· OSTI ID:349906

Gu, B; Yu, W Z; Mao, X ^[1]; Luo, J L ^[2]

---

1. Univ. of Calgary, Alberta (Canada). Dept. of Mechanical Engineering
2. Univ. of Alberta, Edmonton, Alberta (Canada). Dept. of Chemical and Materials Engineering

Slow strain rate tests (SSRT) and fractographic examination of X-80 and X-52 pipeline steels showed transgranular stress corrosion cracking (TGSCC) could occur in a dilute aqueous solution with near-neutral pH. SCC intensity increased as the applied electrochemical potential and strain rates decreased. Hydrogen precharging or addition of carbon dioxide (CO{sub 2}) facilitated the process of SCC, suggesting that dissolution and hydrogen ingress were involved in the cracking process.

• Sponsoring Organization: USDOE
• OSTI ID: 349906
• Journal Information: Corrosion, Journal Name: Corrosion Journal Issue: 3 Vol. 55; ISSN 0010-9312; ISSN CORRAK
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
AQUEOUS SOLUTIONS
CARBON DIOXIDE
FRACTURE PROPERTIES
HYDROGEN
PH VALUE
PIPELINES
STEELS
STRAIN RATE
STRESS CORROSION