Regulating the partially mixed zone via post-weld heat treatment to enhance sulfide stress corrosion cracking resistance of the Inconel 625/X80 weld overlay

doi:10.1016/j.mtcomm.2024.109701

IMR OpenIR

	Regulating the partially mixed zone via post-weld heat treatment to enhance sulfide stress corrosion cracking resistance of the Inconel 625/X80 weld overlay
	Zhang, Yan 1,2; Dong, Lijin 1; Ma, Cheng 3; Zhang, Ziyu 4; Wang, Qinying 1; Wu, Guiyu 1; Liu, Li 1
通讯作者	Dong, Lijin(ljdong89@163.com)
	2024-08-01
发表期刊	MATERIALS TODAY COMMUNICATIONS
卷号	40 页码:12
摘要	This paper investigated the effect of post-weld heat treatment (PWHT) on microstructure evolution and sulfide stress corrosion cracking (SSCC) behavior of the fusion boundary (FB) region of Inconel 625/X80 weld overlay, with a focus on the partially mixed zone (PMZ). Three heat treatment regimens were designed, namely 620 degrees C/ 10 h, 620 degrees C/20 h, and 670 degrees C/10 h, in which 620 degrees C/20 h was proved to be the optimal parameter. The 10-hour PWHT conditions might induce heterogeneous carbon distribution owing to insufficient tempering duration, exacerbating the hardness mismatch in the FB region and thus promoting the development of SSCC. Following the 620 degrees C/20 h treatment, most of the brittle phase with high hardness in the FB region was eliminated, reducing the nucleation site for SSCC. More importantly, martensite in the PMZ was transformed into austenite with rod morphology, while cementite adjacent to the PMZ might evolve into dispersed refined austenite. Austenite shows low hydrogen sensitivity, enhancing the SSCC resistance of the PMZ. On the other hand, the carbides in the X80 matrix might restrict the diffusion of hydrogen toward the PMZ, thereby reducing the susceptibility of the PMZ to SSCC.
关键词	Post-weld heat treatment Sulfide stress corrosion cracking Partially mixed zone Inconel 625/X80 weld overlay Hydrogen
资助者	National Natural Science Foundation of China
DOI	10.1016/j.mtcomm.2024.109701
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52001264]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001264271900001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/187675
专题	中国科学院金属研究所
通讯作者	Dong, Lijin
作者单位	1.Southwest Petr Univ, Sch New Energy & Mat, Chengdu 610500, Peoples R China 2.Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Corros & Protect Ctr, Beijing 100083, Peoples R China 3.HBIS Grp, Mat Technol Res Inst, Shijiazhuang 050000, Peoples R China 4.Chinese Acad Sci, Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yan,Dong, Lijin,Ma, Cheng,et al. Regulating the partially mixed zone via post-weld heat treatment to enhance sulfide stress corrosion cracking resistance of the Inconel 625/X80 weld overlay[J]. MATERIALS TODAY COMMUNICATIONS,2024,40:12.
APA	Zhang, Yan.,Dong, Lijin.,Ma, Cheng.,Zhang, Ziyu.,Wang, Qinying.,...&Liu, Li.(2024).Regulating the partially mixed zone via post-weld heat treatment to enhance sulfide stress corrosion cracking resistance of the Inconel 625/X80 weld overlay.MATERIALS TODAY COMMUNICATIONS,40,12.
MLA	Zhang, Yan,et al."Regulating the partially mixed zone via post-weld heat treatment to enhance sulfide stress corrosion cracking resistance of the Inconel 625/X80 weld overlay".MATERIALS TODAY COMMUNICATIONS 40(2024):12.