Corrosion Fatigue Behavior of 316LN Stainless Steel Hollow Specimen in High-Temperature Pressurized Water

doi:10.11900/0412.1961.2020.00134

IMR OpenIR

	Corrosion Fatigue Behavior of 316LN Stainless Steel Hollow Specimen in High-Temperature Pressurized Water
	Tan Jibo; Wang Xiang; Wu Xinqiang; Han En-Hou
通讯作者	Wu Xinqiang(xqwu@imr.ac.cn)
	2021-03-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	57 期号:3 页码:309-316
摘要	Environmentally assisted fatigue is an important factor in the design, safety review, and life management of key components used in nuclear power plants. Piping systems, valves, and small-bore pipes are sensitive to fatigue damage in nuclear power plants. In this work, a kind of hollow specimen for fatigue testing was designed. High-temperature pressurized water flows through the inside of the specimen, and the outside of the specimen is exposed to air. The corrosion fatigue behavior of 316LN stainless steel was investigated in high-temperature pressurized water using the hollow specimens. The experimental results show that the fatigue strength of 316LN stainless steel was reduced in a high-temperature pressurized water environment, and its fatigue life decreased with decreasing strain rate. The fatigue lives obtained by hollow and standard round bar specimens were comparable, which indicate that it is reasonable and feasible to use the hollow specimen to study the environmentally assisted fatigue performance of nuclear-grade structural materials in a high-temperature pressurized water environment. At low strain rate conditions, the fatigue crack initiation region is a typical fan-shaped pattern with quasi-cleavage cracking characteristics. The fatigue crack growth region is characterized by fatigue striation, and the environmental effects are highly significant in the stage of fatigue crack initiation. The fatigue damage mechanism of 316LN stainless steel in a high-temperature pressurized water environment is also discussed.
关键词	corrosion fatigue high-temperature pressurized water stainless steel hollow specimen
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China
DOI	10.11900/0412.1961.2020.00134
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFB0702103] ; National Natural Science Foundation of China[51671201]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000618643300005
出版者	SCIENCE PRESS
引用统计	被引频次：1[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/321006/161049
专题	中国科学院金属研究所
通讯作者	Wu Xinqiang
作者单位	Chinese Acad Sci, CAS Key Lab Nucl Mat & Safety Assessment, Liaoning Key Lab Safety & Assessment Tech Nucl Ma, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Tan Jibo,Wang Xiang,Wu Xinqiang,et al. Corrosion Fatigue Behavior of 316LN Stainless Steel Hollow Specimen in High-Temperature Pressurized Water[J]. ACTA METALLURGICA SINICA,2021,57(3):309-316.
APA	Tan Jibo,Wang Xiang,Wu Xinqiang,&Han En-Hou.(2021).Corrosion Fatigue Behavior of 316LN Stainless Steel Hollow Specimen in High-Temperature Pressurized Water.ACTA METALLURGICA SINICA,57(3),309-316.
MLA	Tan Jibo,et al."Corrosion Fatigue Behavior of 316LN Stainless Steel Hollow Specimen in High-Temperature Pressurized Water".ACTA METALLURGICA SINICA 57.3(2021):309-316.