Microstructure and stress corrosion cracking of a SA508-309L/308L-316L dissimilar metal weld joint in primary pressurized water reactor environment

doi:10.1016/j.jmst.2019.08.035

IMR OpenIR

	Microstructure and stress corrosion cracking of a SA508-309L/308L-316L dissimilar metal weld joint in primary pressurized water reactor environment
	Dong, Lijin; Ma, Cheng; Peng, Qunjia; Han, En-Hou; Ke, Wei
	2020-03-01
Source Publication	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
Volume	40 Pages:1-14
Abstract	Stress corrosion cracking (SCC) of an SA508-309 L/308 L-316 L dissimilar metal weld joint in primary pressurized water reactor environment was investigated by the interrupted slow strain rate tension tests following a microstructure characterization. The 308 L weld metal shows a higher content of delta ferrite than the 309 L weld metal. In addition, no obvious Cr-depletion but carbides precipitation at gamma/delta phase boundaries was observed in both 308 L and 309 L weld metals. The slow strain rate tension tests showed that the SCC susceptibility of the base and weld metals of the dissimilar metal weld joint follows the order of SA508 < 308 L weld metal < the heat affected zone of 316 L base metal < 309 L weld metal. The higher SCC susceptibility of 309 L weld metal than that of 308 L weld metal is likely due to the lower content of 8 ferrite. In addition, a preferential SCC initiation in the 309 L weld metal adjacent to 308 L weld metal is attributed to few carbides in this region. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
DOI	10.1016/j.jmst.2019.08.035
WOS ID	WOS:000510493300001
Citation statistics	Cited Times:4[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/83074
Collection	中国科学院金属研究所
Recommended Citation GB/T 7714	Dong, Lijin,Ma, Cheng,Peng, Qunjia,et al. Microstructure and stress corrosion cracking of a SA508-309L/308L-316L dissimilar metal weld joint in primary pressurized water reactor environment[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2020,40:1-14.
APA	Dong, Lijin,Ma, Cheng,Peng, Qunjia,Han, En-Hou,&Ke, Wei.(2020).Microstructure and stress corrosion cracking of a SA508-309L/308L-316L dissimilar metal weld joint in primary pressurized water reactor environment.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,40,1-14.
MLA	Dong, Lijin,et al."Microstructure and stress corrosion cracking of a SA508-309L/308L-316L dissimilar metal weld joint in primary pressurized water reactor environment".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 40(2020):1-14.

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