Stress corrosion cracking of X-70 pipeline steel in near neutral pH solution subjected to constant toad and cyclic toad testing

IMR OpenIR

	Stress corrosion cracking of X-70 pipeline steel in near neutral pH solution subjected to constant toad and cyclic toad testing
	B. Y. Fang; E. H. Han; J. Q. Wang; W. Ke
	2007
发表期刊	Corrosion Engineering Science and Technology
ISSN	1478-422X
卷号	42 期号:2 页码:123-129
摘要	Stress corrosion cracking (SCC) tests were conducted on American Petroleum Institute (API) grade X-70 line pipe steel using smooth specimens in a standard near neutral pH solution, NS4. Both constant loading and cyclic loading conditions were employed. There were some SCC cracks on the surfaces of specimens under constant loading conditions when the applied load and test duration were appropriate. These cracks were related to stress concentration at corrosion pits. Generally, the local strain rate around corrosion pits in constant load tests was not high enough for the transition from pits to cracks to take place, and so long test times were needed for crack initiation. In contrast, cyclic loading tests facilitated near neutral pH SCC by making the local strain rate at the crack tip change under the applied load spectrum and by enhancing the crack tip local strain rate, which appreciably shortened the crack initiation incubation.
部门归属	chinese acad sci, inst met res, environm corros ctr, shenyang 110016, peoples r china.;wang, jq (reprint author), chinese acad sci, inst met res, environm corros ctr, 62 wencui rd, shenyang 110016, peoples r china;jiqwang@imr.ac.cn
关键词	Stress Corrosion Cracking Pipeline Steel Constant Loading Cyclic Loading Near Neutral Ph Solution Local Strain Rate Strain-rate Transport Processes Creep X-80
URL	查看原文
WOS记录号	WOS:000248415700005
引用统计	被引频次：30[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/321006/33521
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	B. Y. Fang,E. H. Han,J. Q. Wang,et al. Stress corrosion cracking of X-70 pipeline steel in near neutral pH solution subjected to constant toad and cyclic toad testing[J]. Corrosion Engineering Science and Technology,2007,42(2):123-129.
APA	B. Y. Fang,E. H. Han,J. Q. Wang,&W. Ke.(2007).Stress corrosion cracking of X-70 pipeline steel in near neutral pH solution subjected to constant toad and cyclic toad testing.Corrosion Engineering Science and Technology,42(2),123-129.
MLA	B. Y. Fang,et al."Stress corrosion cracking of X-70 pipeline steel in near neutral pH solution subjected to constant toad and cyclic toad testing".Corrosion Engineering Science and Technology 42.2(2007):123-129.