Effects of precipitation on the stress corrosion crack initiation of alloy 718 in simulated pressurized water reactor primary environment

doi:10.1016/j.actamat.2024.120127

IMR OpenIR

	Effects of precipitation on the stress corrosion crack initiation of alloy 718 in simulated pressurized water reactor primary environment
	Ning, Zehao 1; Zhang, Haoran 1; Zhang, Shihao 1; Hao, Xianchao 2,3; Han, En-Hou 4,5; Kuang, Wenjun 1,4
通讯作者	Kuang, Wenjun(wjkuang66@gmail.com)
	2024-09-01
发表期刊	ACTA MATERIALIA
ISSN	1359-6454
卷号	276 页码:14
摘要	The effect of precipitation on the stress corrosion cracking (SCC) initiation of Alloy 718 in high temperature hydrogenated water was investigated through slow strain rate tensile (SSRT) test. To clarify the roles of different secondary phases, different heat treatments were applied to separate the precipitation of those phases. There is a tradeoff between the mechanical strength and SCC resistance. Both intergranular delta phase and intragranular gamma '/gamma '' phases can enhance the mechanical strength but decrease the SCC resistance of alloy. That is because the precipitates (especially the intergranular delta phase) can be preferentially oxidized due to the high content of active elements. Hence, the grain boundary decorated with delta phase would be significantly degraded. Moreover, both precipitates (especially the intragranular gamma '/gamma '' phases) can aggravate the degree of localized deformation. Such enhanced deformation localization can induce stress concentration and promote SCC initiation at grain boundary.
关键词	Alloy 718 Stress corrosion Reactor conditions Stress-corrosion cracking Precipitation
资助者	National Natural Science Foundation ; Development Program of the Ministry of Science and Technology of China ; Young Talent Support Plan of Xi'an Jiaotong University
DOI	10.1016/j.actamat.2024.120127
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation[52271068] ; Development Program of the Ministry of Science and Technology of China[2019YFA0209900] ; Young Talent Support Plan of Xi'an Jiaotong University
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001261131700001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：7[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/321006/187751
专题	中国科学院金属研究所
通讯作者	Kuang, Wenjun
作者单位	1.Xi Jiaotong Univ, Ctr Adv Mat Performance Nanoscale CAMP Nano, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 4.South China Univ Technol, Guangzhou 510641, Peoples R China 5.Inst Corros Sci & Technol, Guangzhou 510530, Peoples R China
推荐引用方式 GB/T 7714	Ning, Zehao,Zhang, Haoran,Zhang, Shihao,et al. Effects of precipitation on the stress corrosion crack initiation of alloy 718 in simulated pressurized water reactor primary environment[J]. ACTA MATERIALIA,2024,276:14.
APA	Ning, Zehao,Zhang, Haoran,Zhang, Shihao,Hao, Xianchao,Han, En-Hou,&Kuang, Wenjun.(2024).Effects of precipitation on the stress corrosion crack initiation of alloy 718 in simulated pressurized water reactor primary environment.ACTA MATERIALIA,276,14.
MLA	Ning, Zehao,et al."Effects of precipitation on the stress corrosion crack initiation of alloy 718 in simulated pressurized water reactor primary environment".ACTA MATERIALIA 276(2024):14.