Influencing mechanisms of C content and aging treatment on intergranular corrosion sensitivity of 316 stainless steel weld metals

doi:10.1016/j.jmrt.2024.06.032

IMR OpenIR

	Influencing mechanisms of C content and aging treatment on intergranular corrosion sensitivity of 316 stainless steel weld metals
	Wei, Shitong 1,2; Zhao, Langlang 1,2; Lu, Shanping 1,2
通讯作者	Lu, Shanping(shplu@imr.ac.cn)
	2024-07-01
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	31 页码:73-82
摘要	For analyzing the intergranular corrosion sensitivity of 316 stainless steel weld metals with different C contents, the intergranular corrosion behaviors of the weld metals under as-welded and different as-aged states were evaluated by both the H2SO4-CuSO4 solution corrosion method and the double loop electrochemical potentiokinetic reactivation method, respectively. The results indicate that after long term aging treatment at 550 degrees C, the 8 ferrite in high C weld metal has a higher transformation fraction than that in low C weld metal, which results in a higher intergranular corrosion sensitivity for high C weld metal. However, after the long term aging treatment at 600 degrees C, the 8 ferrite in high C weld metal transforms completely in the early stage aging, and with increasing of the aging time, the desensitization process occurs in the Cr-poor region of high C weld metal, which improves the intergranular corrosion resistance, and results in a higher intergranular corrosion sensitivity for low C weld metal. Therefore, under the service environment of considering the intergranular corrosion performance of the weld metal, the welding material with the appropriate C content should be selected according to the service temperature.
关键词	Intergranular corrosion Stainless steel Weld metal Aging treatment Microstructure Reactivation rate
资助者	LingChuang Research Project of China National Nuclear Corporation ; China Institute of Atomic Energy
DOI	10.1016/j.jmrt.2024.06.032
收录类别	SCI
语种	英语
资助项目	LingChuang Research Project of China National Nuclear Corporation ; China Institute of Atomic Energy[E141L803J1]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001253782400001
出版者	ELSEVIER
引用统计	被引频次：2[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/321006/187480
专题	中国科学院金属研究所
通讯作者	Lu, Shanping
作者单位	1.Chinese Acad Sci, CAS Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Wei, Shitong,Zhao, Langlang,Lu, Shanping. Influencing mechanisms of C content and aging treatment on intergranular corrosion sensitivity of 316 stainless steel weld metals[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,31:73-82.
APA	Wei, Shitong,Zhao, Langlang,&Lu, Shanping.(2024).Influencing mechanisms of C content and aging treatment on intergranular corrosion sensitivity of 316 stainless steel weld metals.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,31,73-82.
MLA	Wei, Shitong,et al."Influencing mechanisms of C content and aging treatment on intergranular corrosion sensitivity of 316 stainless steel weld metals".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 31(2024):73-82.