Effect of Temperature on Reheat Cracking Susceptibility of Super304H Austenitic Stainless Steel Weld Metal

IMR OpenIR

	Effect of Temperature on Reheat Cracking Susceptibility of Super304H Austenitic Stainless Steel Weld Metal
	Xiao Xiaopeng 1,2; Dong Wenchao 1; Li Dianzhong 1; Li Yiyi 1,3; Lu Shanping 1
通讯作者	Lu Shanping(shplu@imr.ac.cn)
	2023-07-01
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1875-5372
卷号	52 期号:7 页码:2444-2452
摘要	Super304H austenitic stainless steel has been widely used in superheater and reheater pipes of the ultra-supercritical thermal power unit boilers. During long-term thermal exposure, reheat cracking is prone to occur at the assembly sites of the pipeline weld joint. This study systematically studied the effect of temperature on the reheat cracking susceptibility of Super304H austenitic stainless steel weld metal by a pre-compressed CT specimen method. The results show that the time required for the weld metal to generate cracks at 650 degrees C is shorter than that of the weld metal at 600 degrees C, leading to a higher reheat cracking susceptibility. The main reason for this phenomenon is that the grain boundary strength decays faster with time and the stress relaxation rate is higher at 650 degrees C, while the effect of intragranular strengthening difference at different temperatures is negligible.
关键词	reheat cracking temperature austenitic stainless steel weld metal grain boundary strength
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001056254200013
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/179282
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, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Xiao Xiaopeng,Dong Wenchao,Li Dianzhong,et al. Effect of Temperature on Reheat Cracking Susceptibility of Super304H Austenitic Stainless Steel Weld Metal[J]. RARE METAL MATERIALS AND ENGINEERING,2023,52(7):2444-2452.
APA	Xiao Xiaopeng,Dong Wenchao,Li Dianzhong,Li Yiyi,&Lu Shanping.(2023).Effect of Temperature on Reheat Cracking Susceptibility of Super304H Austenitic Stainless Steel Weld Metal.RARE METAL MATERIALS AND ENGINEERING,52(7),2444-2452.
MLA	Xiao Xiaopeng,et al."Effect of Temperature on Reheat Cracking Susceptibility of Super304H Austenitic Stainless Steel Weld Metal".RARE METAL MATERIALS AND ENGINEERING 52.7(2023):2444-2452.