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Effect of Surface-Active Element Oxygen on Heat and Mass Transfer in Laser Welding of Dissimilar Metals: Numerical and Experimental Study

文献类型：期刊论文

作者Dong, Binxin2,3; Li, Zhiyong2,3; Yu, Gang1,2,3; Li, Shaoxia2,3; Tian, Chongxin2,3; Bian, Yanhua2,3; Shu, Zhuang2,3; He, Xiuli2,3; Tian CX(田崇鑫); Yu G(虞钢)
刊名METALS
出版日期2022-04-01
卷号12期号:4页码:22
关键词dissimilar welding thermal behavior surface-active element fluid flow mass transfer
DOI10.3390/met12040556
通讯作者Li, Zhiyong(lizhiyong@imech.ac.cn) ; He, Xiuli(xlhe@imech.ac.cn)
英文摘要The effects of the surface-active element oxygen on the laser welding of 304 stainless steel (304SS) and nickel were numerically and experimentally studied in pure argon and argon-oxygen mixed gas atmospheres containing 21% oxygen (AMO). In this study, the molten pool morphology, thermal behavior, solidification phenomenon, correlation between dilution and convection flow, and microhardness of welding joints were analyzed. As a result of oxygen effects, the molten pool was deeper, the maximum temperature was higher, and the maximum flow velocity was lower in the AMO. The cooling rate (GR) and combination parameter (G/R) were studied by the direct simulation of temperature gradient (G) and solidification growth rate (R). Combined with the solidification microstructure, it was found that oxygen had little effect on grain size. The major elements Fe, Cr, and Ni within the solidified molten pool in the AMO were uniformly diluted, while the distribution of the above elements was non-homogenous in pure argon. Stronger flow and multiple directions of convection inside the molten pool contributed to uniform dilution in the AMO. The distribution of microhardness was similar to the content of Cr, and the microhardness at the substrate interface of the joint was higher in the AMO than in pure argon. The preliminary conclusions of this study provide in-depth insights into the effects of surface-active element oxygen on heat and mass transfer in laser dissimilar welding.
WOS关键词MECHANICAL-PROPERTIES ; GTA ; MICROSTRUCTURE ; FLOW ; VAPORIZATION ; CONVECTION ; TRANSPORT ; JOINT ; SHAPE
资助项目Beijing Municipal Commission of Science and Technology[Z181100003818015] ; National Natural Science Foundation of China[11672304] ; Chinese Scholarship Council (CSC)
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000785320000001
资助机构Beijing Municipal Commission of Science and Technology ; National Natural Science Foundation of China ; Chinese Scholarship Council (CSC)
源URL[http://dspace.imech.ac.cn/handle/311007/88898]  
专题宽域飞行工程科学与应用中心
通讯作者Li, Zhiyong; He, Xiuli
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, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Dong, Binxin,Li, Zhiyong,Yu, Gang,et al. Effect of Surface-Active Element Oxygen on Heat and Mass Transfer in Laser Welding of Dissimilar Metals: Numerical and Experimental Study[J]. METALS,2022,12(4):22.
APA Dong, Binxin.,Li, Zhiyong.,Yu, Gang.,Li, Shaoxia.,Tian, Chongxin.,...&李少霞.(2022).Effect of Surface-Active Element Oxygen on Heat and Mass Transfer in Laser Welding of Dissimilar Metals: Numerical and Experimental Study.METALS,12(4),22.
MLA Dong, Binxin,et al."Effect of Surface-Active Element Oxygen on Heat and Mass Transfer in Laser Welding of Dissimilar Metals: Numerical and Experimental Study".METALS 12.4(2022):22.

入库方式： OAI收割

来源：力学研究所

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