Deformation and cracking behaviors of proton-irradiated 308L stainless steel weld metal strained in simulated PWR primary water

doi:10.1016/j.jmst.2021.11.056

IMR OpenIR

	Deformation and cracking behaviors of proton-irradiated 308L stainless steel weld metal strained in simulated PWR primary water
	Lin, Xiaodong 1,3; Peng, Qunjia 2,3; Han, En-Hou 3; Ke, Wei 3
通讯作者	Peng, Qunjia(pengqunjia@yahoo.com)
	2022-09-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	120 页码:36-52
摘要	The proton-irradiated 308L stainless steel weld metal was strained by using constant extension rate tensile testing in simulated PWR primary water, and its deformation microstructures and irradiation assisted stress corrosion cracking (IASCC) behavior were investigated. The results suggest that the irradiation significantly increases the SCC susceptibility of 308L weld metal and causes various deformation microstructures including lathy faulted planes, dislocation channels and deformation twins in austenite and atomic plane rotation in delta-ferrite. The propagation of intergranular IASCC cracks is closely related to the location of the crack tip. For the crack tip in the specimen matrix interior, localized deformation is likely the key factor responsible for the crack growth. For the crack tip close to the specimen surface, however, localized corrosion along the grain boundary rather than the localized deformation appears to dominate the crack propagation. Unlike the intergranular cracks, the IASCC cracks along the delta-ferrite/austenite phase boundary can initiate either by crack initiation at the phase boundary or by crack propagation from the grain boundary. In both cases, the cracked phase boundaries contain a large number of carbides and are severely corroded, but no deformation microstructures are observed, which implies that the localized corrosion may play an important role in the IASCC along the phase boundary. In addition, delta-ferrite can retard the IASCC crack propagation along the grain boundary, which is probably related to the reduction of localized deformation by delta-ferrite. (C) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Stainless steel weld metal Proton irradiation Deformation microstructures Irradiation assisted stress corrosion cracking Grain and phase boundaries
资助者	Jiangsu Natural Science Foundation ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation
DOI	10.1016/j.jmst.2021.11.056
收录类别	SCI
语种	英语
资助项目	Jiangsu Natural Science Foundation[BK20191178] ; National Natural Science Foundation of China[52071018] ; China Postdoctoral Science Foundation[2021M692018]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000788171300004
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：9[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/321006/172723
专题	中国科学院金属研究所
通讯作者	Peng, Qunjia
作者单位	1.Shanghai Univ, Inst Mat, Shanghai 200072, Peoples R China 2.Suzhou Nucl Power Res Inst, Suzhou 215004, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Lin, Xiaodong,Peng, Qunjia,Han, En-Hou,et al. Deformation and cracking behaviors of proton-irradiated 308L stainless steel weld metal strained in simulated PWR primary water[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2022,120:36-52.
APA	Lin, Xiaodong,Peng, Qunjia,Han, En-Hou,&Ke, Wei.(2022).Deformation and cracking behaviors of proton-irradiated 308L stainless steel weld metal strained in simulated PWR primary water.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,120,36-52.
MLA	Lin, Xiaodong,et al."Deformation and cracking behaviors of proton-irradiated 308L stainless steel weld metal strained in simulated PWR primary water".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 120(2022):36-52.