Microstructural evolution and stress relaxation cracking mechanism for Super304H austenitic stainless steel weld metal

doi:10.1016/j.jmst.2021.06.010

CORC > 金属研究所 > 中国科学院金属研究所

	Microstructural evolution and stress relaxation cracking mechanism for Super304H austenitic stainless steel weld metal
	Xiao, Xiaopeng 1,2; Li, Dianzhong 1; Li, Yiyi 1,3; Lu, Shanping 1
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2022-02-20
卷号	100 页码:82-90
关键词	Stress relaxation cracking Super304H steel Weld metal Aging treatment Residual stress Precipitates
ISSN号	1005-0302
DOI	10.1016/j.jmst.2021.06.010
通讯作者	Lu, Shanping(shplu@imr.ac.cn)
英文摘要	The pre-compressed CT technique was used to quantitatively investigate the formation of stress relaxation cracks under different tensile residual stresses and aging time in Super304H austenitic stainless steel weld metal. The statistical results revealed that intergranular cracks could occur within 2000 h under 650 degrees C when the residual stress was applied with greater than 18 KN pre-compression force. Detailed grain interior and boundary analyses showed that the growth of intragranular Cu-rich particles could induce a strong grain interior, and the intergranular Nb(C, N) carbides were one of the causes to crack under short-term aging time. For long-term aging time conditions, the intergranular M23C6 carbides were more susceptible to crack than intergranular Nb(C, N) carbides. Finally, the mechanism responsible for stress relaxation cracking formation was carefully illustrated for the weld metals after short-term aging and long-term aging, respectively. (C) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	Shenyang National Laboratory for Materials Science Innovation Projects[L2019R35]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000743264400011
资助机构	Shenyang National Laboratory for Materials Science Innovation Projects
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173296]
专题	金属研究所_中国科学院金属研究所
通讯作者	Lu, Shanping
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Insititute Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Xiaopeng,Li, Dianzhong,Li, Yiyi,et al. Microstructural evolution and stress relaxation cracking mechanism for Super304H austenitic stainless steel weld metal[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2022,100:82-90.
APA	Xiao, Xiaopeng,Li, Dianzhong,Li, Yiyi,&Lu, Shanping.(2022).Microstructural evolution and stress relaxation cracking mechanism for Super304H austenitic stainless steel weld metal.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,100,82-90.
MLA	Xiao, Xiaopeng,et al."Microstructural evolution and stress relaxation cracking mechanism for Super304H austenitic stainless steel weld metal".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 100(2022):82-90.