中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Analysis of surface tension driven flow and solidification behavior in laser linear welding of stainless steel

文献类型:期刊论文

作者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; Tian CX(田崇鑫)2,3; Dong BX2,3
刊名OPTICS AND LASER TECHNOLOGY
出版日期2020-03-01
卷号123页码:11
ISSN号0030-3992
关键词Surface tension Driving force Fluid flow Solidification behavior Additive manufacturing
DOI10.1016/j.optlastec.2019.105914
通讯作者Yu, Gang(gyu@imech.ac.cn) ; He, Xiuli(xlhe@imech.ac.cn)
英文摘要A transient three-dimensional thermal-fluid-metallurgy model was proposed to study the surface tension driven flow and welding metallurgical behavior during laser linear welding of 304 stainless steel. Numerical simulation and experimental method were both used to investigate the thermal behavior, surface tension driven flow, driving mechanism and solidification characteristics. The temperature related driving force was qualitatively analyzed, and surface tension and surface shear stress were quantitatively studied. Numerical method and dimensional analysis were also carried out to understand the importance of different driving forces, respectively. The metallurgical model was sequentially coupled to the thermal-fluid model to calculate four solidification parameters. Temperature gradient was observed to be much larger at the front of the melt pool due to the effect of thermal conductivity, and decreased from center to the periphery. Both the surface tension and surface tension driven flow were found smaller in the central area. The maximum shear stress may reach 2500 N/m(2) and pushed an intense outward convection. The solidification parameters were used to predict the solidified morphology, and the prediction was well validated by experimental results. The obtained basic conclusions in this work demonstrated that this study of thermal-fluid-metallurgical behavior could provide an improved understanding of the surface tension driven flow and solidification behavior inside the melt pool of welding and additive manufacturing process.
分类号二类
WOS关键词NUMERICAL-SIMULATION ; THERMAL-BEHAVIOR ; FLUID-FLOW ; PHASE-CHANGE ; CONVECTION ; METAL ; HEAT ; ARC ; TRANSPORT ; DYNAMICS
资助项目National Natural Science Foundation of China[11272316] ; National Natural Science Foundation of China[11272317] ; National Natural Science Foundation of China[11672304] ; National Natural Science Foundation of China[11502269] ; plan of Beijing Municipal Commission of Science and Technology[Z181100003818015] ; Chinese Academy of Sciences[yz201636]
WOS研究方向Optics ; Physics
语种英语
WOS记录号WOS:000504504400030
资助机构National Natural Science Foundation of China ; plan of Beijing Municipal Commission of Science and Technology ; Chinese Academy of Sciences
其他责任者Yu, Gang ; He, Xiuli
源URL[http://dspace.imech.ac.cn/handle/311007/81284]  
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. Analysis of surface tension driven flow and solidification behavior in laser linear welding of stainless steel[J]. OPTICS AND LASER TECHNOLOGY,2020,123:11.
APA 李志永,虞钢,何秀丽,李少霞,田崇鑫,&Dong BX.(2020).Analysis of surface tension driven flow and solidification behavior in laser linear welding of stainless steel.OPTICS AND LASER TECHNOLOGY,123,11.
MLA 李志永,et al."Analysis of surface tension driven flow and solidification behavior in laser linear welding of stainless steel".OPTICS AND LASER TECHNOLOGY 123(2020):11.

入库方式: OAI收割

来源:力学研究所

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