Probing thermocapillary convection and multisolute dilution in laser welding of dissimilar miscible metals

doi:10.1016/j.ijthermalsci.2021.107242

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	Probing thermocapillary convection and multisolute dilution in laser welding of dissimilar miscible metals
	Li ZY(李志永)1,3; Yu G(虞钢)1,2,3; He XL(何秀丽)1,3; Tian CX(田崇鑫)3; Li SX(李少霞)3; Li HM 1
刊名	INTERNATIONAL JOURNAL OF THERMAL SCIENCES
	2022-02-01
卷号	172 页码:14
关键词	Thermal behavior Driving force Fluid flow Mass transfer Additive manufacturing
ISSN号	1290-0729
DOI	10.1016/j.ijthermalsci.2021.107242
通讯作者	Yu, Gang(gyu@imech.ac.cn) ; He, Xiuli(xlhe@imech.ac.cn)
英文摘要	Coupled with convection flow, multisolute dilution was investigated by an improved numerical model during laser dissimilar welding of 304 stainless steel and nickel. Thermal behavior was firstly studied and solidification characteristics were also analyzed. Then, dimensional analysis of driving force was carried out, and the evolution of surface tension and surface shear stress were quantitatively analyzed for a better understanding of driving mechanism. Finally, species dilution was investigated based on multisolute model, and then compared with binary model for a clear illustration. Cooling rate was found much larger at SS side, but the morphology parameter changed little between different sides. Both the surface tension and surface shear stress were relatively larger at SS side, but this difference decreased with time. Surface shear stress reached 3390 Pa and 2000 Pa at SS side and Ni side, respectively, and results in a centrally outward Marangoni flow. Multisolute effect was considered, and the distribution of all main elements was obtained one time with high efficiency. Simulated dilution result from multisolute model showed great correspondence with EDS observation. The fundamental conclusions in this work provided a valuable insight into the heat and mass transfer process during welding and additive manufacturing.
分类号	二类/Q1
资助项目	Beijing Municipal Commission of Science and Technology[Z181100003818015] ; National Natural Science Foundation of China[11672304] ; Chinese Scholarship Council (CSC)
WOS关键词	FLUID-FLOW ; MASS-TRANSPORT ; THERMAL-BEHAVIOR ; HEAT-TRANSFER ; PHASE-CHANGE ; STEEL ; ALUMINUM ; ALLOY
WOS研究方向	Thermodynamics ; Engineering
语种	英语
WOS记录号	WOS:000714610700003
资助机构	Beijing Municipal Commission of Science and Technology ; National Natural Science Foundation of China ; Chinese Scholarship Council (CSC)
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/311007/87898]
专题	宽域飞行工程科学与应用中心
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China;
推荐引用方式 GB/T 7714	Li ZY,Yu G,He XL,et al. Probing thermocapillary convection and multisolute dilution in laser welding of dissimilar miscible metals[J]. INTERNATIONAL JOURNAL OF THERMAL SCIENCES,2022,172:14.
APA	李志永,虞钢,何秀丽,田崇鑫,李少霞,&Li HM.(2022).Probing thermocapillary convection and multisolute dilution in laser welding of dissimilar miscible metals.INTERNATIONAL JOURNAL OF THERMAL SCIENCES,172,14.
MLA	李志永,et al."Probing thermocapillary convection and multisolute dilution in laser welding of dissimilar miscible metals".INTERNATIONAL JOURNAL OF THERMAL SCIENCES 172(2022):14.