Mechanical and environmental influences on stress corrosion cracking of an X-70 pipeline steel in dilute near-neutral pH solutions

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	Mechanical and environmental influences on stress corrosion cracking of an X-70 pipeline steel in dilute near-neutral pH solutions
	B. Fang ; E. H. Han ; J. Wang ; W. Ke
刊名	Corrosion
	2007
卷号	63 期号:5 页码:419-432
关键词	near-neutral pH pipeline steel potential slow strain rate test strain rate stress corrosion cracking strain-rate fatigue growth prediction initiation water x-80
ISSN号	0010-9312
中文摘要	Slow strain rate tests (SSRT) were used to investigate stress corrosion cracking (SCC behavior of an X-70 pipeline steel in a soil solution and NS-4 solution, both saturated with 5% carbon dioxide (CO(2))/balance N(2) gas mixture at different potentials and strain rates. It was found that transgranular SCC occurred in this steel in the two solutions. The influence of strain rate was correlated with electrochemical potential. At a high strain rate, there were fewer cracks visible on the specimen side surface, but SCC occurred at a high cathodic protection potential. At a low strain rate, SCC susceptibility increased with decreasing an electrochemical potential. The SCC susceptibility was influenced greater in the soil solution than in the NS-4 solution. The susceptible local strain rate for near-neutral pH SCC was determined, which was lower than 5 x 10(-5) /s. There were several potential crack initiation sites including corrosion pits, inclusions, and flow lines formed during the rolling process of the steel.
原文出处	://WOS:000246283500004
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/33520]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	B. Fang,E. H. Han,J. Wang,et al. Mechanical and environmental influences on stress corrosion cracking of an X-70 pipeline steel in dilute near-neutral pH solutions[J]. Corrosion,2007,63(5):419-432.
APA	B. Fang,E. H. Han,J. Wang,&W. Ke.(2007).Mechanical and environmental influences on stress corrosion cracking of an X-70 pipeline steel in dilute near-neutral pH solutions.Corrosion,63(5),419-432.
MLA	B. Fang,et al."Mechanical and environmental influences on stress corrosion cracking of an X-70 pipeline steel in dilute near-neutral pH solutions".Corrosion 63.5(2007):419-432.