Effect of solution composition and electrochemical potential on stress corrosion cracking of X-52 pipeline steel
- Ohio State Univ., Columbus, OH (United States)
Electrochemical measurements and constant extension rate tests (CERT) of cold-worked X-52 carbon steel showed stress corrosion cracking (SCC) can be induced in aqueous sulfate, bicarbonate, and simulated soil solutions at 50 C. Susceptibility to SCC was at a minimum near the corrosion potential (E{sub corr}) and increased as the cathodic potential increased. SCC decreased at anodic potentials when general metal dissolution or passivation occurred. Cracking was mainly transgranular (TG) at E{sub corr} and at cathodic potentials. There was strong experimental evidence that SCC was caused by the entrance of atomic hydrogen into the metal.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 244976
- Report Number(s):
- CONF-950304--
- Journal Information:
- Corrosion, Journal Name: Corrosion Journal Issue: 5 Vol. 52; ISSN 0010-9312; ISSN CORRAK
- Country of Publication:
- United States
- Language:
- English
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