Formation of delta-ferrite and its effect on impact toughness of GTAW weld metals in a 12 wt-% Cr steel

doi:10.1080/13621718.2022.2148063

IMR OpenIR

	Formation of delta-ferrite and its effect on impact toughness of GTAW weld metals in a 12 wt-% Cr steel
	Wu, Dong 1; Tian, Wenbin 1,2; Zhang, Kaiyuan 1,2; Lu, Shanping 1,3
通讯作者	Lu, Shanping(shplu@imr.ac.cn)
	2022-11-23
发表期刊	SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
ISSN	1362-1718
页码	7
摘要	This research focused on the formation of the delta-phase and the corresponding effect on the impact toughness in a GTAW weld metal of a 12%Cr F/M steel. Two kinds of delta-phase were identified: one located at the prior austenitic grain boundaries (PAGBs) (called delta(PAGB)) and the other was in the inter-dendritic region (called delta(inter)). The delta(inter) implied that the peritectic transition that occurred at the final stage of solidification in the DSC test, was suppressed in the welding process. A preheating treatment at 95 & DEG;C decreased optimally the delta-phase fraction and thereby decrease the ductile-brittle transition temperature (DBTT). However, excessive preheating at higher temperatures enhanced the fraction of the delta(inter) by promoting the micro-segregation and thus increased the DBTT.
关键词	delta-phase 12Cr% steel preheating temperature GTAW phase transformation impact toughness
资助者	National Key Research and Development Program of China
DOI	10.1080/13621718.2022.2148063
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China ; [2018YFA0702902]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000889485400001
出版者	TAYLOR & FRANCIS LTD
引用统计	被引频次：6[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/321006/176870
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, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China 3.Inst Met Sci & Technol, Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wu, Dong,Tian, Wenbin,Zhang, Kaiyuan,et al. Formation of delta-ferrite and its effect on impact toughness of GTAW weld metals in a 12 wt-% Cr steel[J]. SCIENCE AND TECHNOLOGY OF WELDING AND JOINING,2022:7.
APA	Wu, Dong,Tian, Wenbin,Zhang, Kaiyuan,&Lu, Shanping.(2022).Formation of delta-ferrite and its effect on impact toughness of GTAW weld metals in a 12 wt-% Cr steel.SCIENCE AND TECHNOLOGY OF WELDING AND JOINING,7.
MLA	Wu, Dong,et al."Formation of delta-ferrite and its effect on impact toughness of GTAW weld metals in a 12 wt-% Cr steel".SCIENCE AND TECHNOLOGY OF WELDING AND JOINING (2022):7.