Fluid flow and solute dilution in laser linear butt joining of 304SS and Ni

doi:10.1016/j.ijheatmasstransfer.2020.120233

CORC > 力学研究所 > 中国科学院力学研究所 > 先进制造工艺力学重点实验室

	Fluid flow and solute dilution in laser linear butt joining of 304SS and Ni
	Li ZY(李志永)2,3; Yu G(虞钢)1,2,3; He XL(何秀丽)2,3; Li SX(李少霞)2,3; Li ZX(李梓洵)2,3
刊名	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
	2020-11-01
卷号	161 页码:16
关键词	Thermal behavior Fluid flow Solidification characteristics Mass transfer Dissimilar welding Additive manufacturing
ISSN号	0017-9310
DOI	10.1016/j.ijheatmasstransfer.2020.120233
通讯作者	Yu, Gang(gyu@imech.ac.cn) ; He, Xiuli(xlhe@imech.ac.cn)
英文摘要	Laser linear welding combined with advanced auto-control technology is a promising joint method of dissimilar metals. In this study, an improved three-dimensional model was developed to investigate the thermal behavior, fluid flow and concentration dilution during laser linear dissimilar welding of 304 stainless steel and nickel. The fluid flow and solidification behavior were presented in a 3D view to deeply study the thermal behavior and convection characteristics inside the melt pool. The relationship between dynamic characteristics and concentration dilution was studied numerically and experimentally, and the effects of welding speed, temperature coefficient of surface tension (TCST) and dynamic viscosity on mass transfer were also investigated. Larger cooling rate (GR) and smaller morphology parameter (G/R) were found at top area of the weld pool (WP). Elements from SS (Cr and Fe) were mainly mixed at front side, but Ni was mainly diluted at middle part. Resulting from the Marangoni convection, all the elements were mainly mixed at top area and then transported to the bottom. The redistribution of the species was also observed at each side, resulting in a relatively uniform distribution at each side. Nevertheless, the effects of welding speed, TCST and dynamic viscosity on solute dilution were simulated and proved non-negligible. Differences of solidification and dilution phenomenon were also observed between liner welding and spot welding. It was demonstrated the obtained results in this work provided a vital perspective in comprehending the heat and mass transfer phenomenon inside the melt pool during welding and additive manufacturing process. (C) 2020 Elsevier Ltd. All rights reserved.
分类号	一类
资助项目	National Natural Science Foundation of China[11672304] ; Beijing Municipal Commission of Science and Technology[Z181100003818015]
WOS关键词	THERMAL-BEHAVIOR ; HEAT-TRANSFER ; PHASE-CHANGE ; CONVECTION ; METAL ; SOLIDIFICATION ; SIMULATION ; TRANSPORT
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
语种	英语
WOS记录号	WOS:000571813900025
资助机构	National Natural Science Foundation of China ; Beijing Municipal Commission of Science and Technology
其他责任者	Yu, Gang ; He, Xiuli
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/85303]
专题	力学研究所_先进制造工艺力学重点实验室
作者单位	1.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Key Lab Mech Adv Mfg, Beijing 100190, Peoples R China;
推荐引用方式 GB/T 7714	Li ZY,Yu G,He XL,et al. Fluid flow and solute dilution in laser linear butt joining of 304SS and Ni[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2020,161:16.
APA	李志永,虞钢,何秀丽,李少霞,&李梓洵.(2020).Fluid flow and solute dilution in laser linear butt joining of 304SS and Ni.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,161,16.
MLA	李志永,et al."Fluid flow and solute dilution in laser linear butt joining of 304SS and Ni".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 161(2020):16.