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

IMR OpenIR

	Mechanical and environmental influences on stress corrosion cracking of an X-70 pipeline steel in dilute near-neutral pH solutions; 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
	2007 ; 2007
发表期刊	Corrosion ; Corrosion
ISSN	0010-9312 ; 0010-9312
卷号	63 期号:5 页码:419-432
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.; 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.
部门归属	chinese acad sci, inst met res, environm corros ctr, shenyang 110016, peoples r china.;han, eh (reprint author), chinese acad sci, inst met res, environm corros ctr, shenyang 110016, peoples r china;ehhan@imr.ac.cn ; chinese acad sci, inst met res, environm corros ctr, shenyang 110016, peoples r china.;han, eh (reprint author), chinese acad sci, inst met res, environm corros ctr, shenyang 110016, peoples r china;ehhan@imr.ac.cn
关键词	Near-neutral Ph Near-neutral Ph Pipeline Steel Pipeline Steel Potential Potential Slow Strain Rate Test Slow Strain Rate Test Strain Rate Strain Rate Stress Corrosion Cracking Stress Corrosion Cracking Strain-rate Strain-rate Fatigue Fatigue Growth Growth Prediction Prediction Initiation Initiation Water Water X-80 X-80
URL	查看原文 ; 查看原文
WOS记录号	WOS:000246283500004 ; WOS:000246283500004
引用统计	被引频次：28[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33520
专题	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, Mechanical and environmental influences on stress corrosion cracking of an X-70 pipeline steel in dilute near-neutral pH solutions[J]. Corrosion, Corrosion,2007, 2007,63, 63(5):419-432, 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.