Role of Si content on microstructural and mechanical responses of 16Cr-25Ni superaustenitic stainless steel weld metals

doi:10.1016/j.msea.2022.143727

CORC > 金属研究所 > 中国科学院金属研究所

	Role of Si content on microstructural and mechanical responses of 16Cr-25Ni superaustenitic stainless steel weld metals
	Tian, Wenbin 2,3; Wei, Shitong 1,3; Wu, Dong 1,3; Sun, Jian 1,3; Dong, Wenchao 1,3; Lu, Shanping 3
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2022-09-05
卷号	852 页码:13
关键词	Superaustenitic stainless steel Weld metal Si content M6C Twinning deformation Mechanical properties
ISSN号	0921-5093
DOI	10.1016/j.msea.2022.143727
通讯作者	Lu, Shanping(shplu@imr.ac.cn)
英文摘要	In this work, three 16Cr-25Ni superaustenitic stainless steel weld metals with the Si content of 0.03 wt%, 1.22 wt % and 2.01 wt%, were prepared to study the microstructural evolution and its effect on mechanical properties. The results showed that with the increase of Si content, the size and number density of Mo-rich M6C carbide were increased in the weld metals. In particular, massive long strip shape M6C carbides were observed in the weld metal with the Si content of 2.01 wt%. For tensile tests, good match of strength and ductility was obtained in the weld metals with the Si content of 0.03 wt% and 1.22 wt%. However, the ductility of the weld metal was sharply decreased when the Si content further increased to 2.01 wt%, owing to the long strip shape M6C carbide that weakened the coordinated deformation with the matrix. The impact toughness was monotonously decreased from 185 J to 12 J with the increase of Si content, for the M6C carbide generated easier local stress concentration and fracture that the local stress concentration in the matrix was increasingly difficult to favor the twinning deformation. The results in this work are meaningful for the design of the weld metal with optimized micro-structure and high mechanical performance for liquid lead-bismuth eutectic environment.
资助项目	Shenyang National Laboratory for Materials Science Innovation Projects SYNL2021 ; LingChuang Research Project of China National Nuclear Corporation
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000842984600001
资助机构	Shenyang National Laboratory for Materials Science Innovation Projects SYNL2021 ; LingChuang Research Project of China National Nuclear Corporation
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174533]
专题	金属研究所_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 Metal Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Metal Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Tian, Wenbin,Wei, Shitong,Wu, Dong,et al. Role of Si content on microstructural and mechanical responses of 16Cr-25Ni superaustenitic stainless steel weld metals[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,852:13.
APA	Tian, Wenbin,Wei, Shitong,Wu, Dong,Sun, Jian,Dong, Wenchao,&Lu, Shanping.(2022).Role of Si content on microstructural and mechanical responses of 16Cr-25Ni superaustenitic stainless steel weld metals.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,852,13.
MLA	Tian, Wenbin,et al."Role of Si content on microstructural and mechanical responses of 16Cr-25Ni superaustenitic stainless steel weld metals".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 852(2022):13.