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

被引：73

作者：

Gu, B ^{[1
]}

Yu, WZ

Luo, JL

Mao, X

机构：

[1] Univ Calgary, Dept Mech Engn, Calgary, AB T2N 1N4, Canada

[2] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada

来源：

CORROSION | 1999年 / 55卷 / 03期

关键词：

anodic dissolution; electrochemical potential; hydrogen ingress; hydrogen precharging; pH; pipeline steel; pitting; slow strain rate test; transgranular stress corrosion cracking; X-52; steel; X-80;

D O I：

10.5006/1.3283993

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 (CO2) facilitated the process of SCC, suggesting that dissolution and hydrogen ingress were involved in the cracking process.

引用

页码：312 / 318

页数：7

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