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Numerical Analysis of Molten Pool Behavior and Spatter Formation with Evaporation During Selective Laser Melting of 316L Stainless Steel

文献类型：期刊论文

作者Tang, Pingmei3; Xie, Haiqiong1,2; Wang, Sen1,2; Ding, Xueping1,2; Zhang, Qi1,2; Ma, Honglin1,2; Yang, Jie1,2; Fan, Shuqian1,2; Long, Mujun3; Chen, Dengfu3
刊名METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
出版日期2019-10-01
卷号50期号:5页码:2273-2283
ISSN号1073-5615
DOI10.1007/s11663-019-01641-w
通讯作者Chen, Dengfu(chendfu@cqu.edu.cn) ; Duan, Xuanming(xmduan@cigit.ac.cn)
英文摘要During the selective laser-melting process, material evaporation and resultant spatter are common phenomena that bring about many defects. However, the underlying physical phenomena such as molten pool behavior and spatter formation, as evaporation occurred, are sparsely understood and difficult to observe during the process. Thus, a three-dimensional powder-scale model was established to investigate the thermal and flow behavior of the molten pool, the morphology evolution of the molten pool and keyhole, and the spatter formation with evaporation in the selective laser-melting processing of 316L stainless steel. Phase transitions and variations in interfacial force were taken into account in this model. The modified phase-field method was applied to trace the melt-gas interface. The results showed that keyhole formed in molten pool under recoil pressure, and that there were some differences in the temperature distribution and flow behavior inside and outside the keyhole. In addition, the dimension and surface morphology of the molten pool and keyhole depth altered and gradually stabilized during the process. Moreover, droplet spatter formation at rear of molten pool proceeded roughly as follows: the backward ejection of melt vapor would induce a depression in molten pool and a bump on the molten pool surface, the bump moved backward and subsequently a liquid column formed, then the liquid column formed a neck and gradually pinched off, resulting in the droplet spatter. Furthermore, the characteristic morphology of the scan track and dimension of the molten pool were obtained through experiments, which showed good agreement with the simulation results.
资助项目Key Programs of the Chinese Academy of Sciences[KGZD-EW-T0] ; National Natural Science Foundation of China[11702290] ; CAS Light of West China Program ; Chongqing Research of Application Foundation and Advanced Technology[cstc2016jcyjA0321]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000486025000018
出版者SPRINGER
源URL[http://119.78.100.138/handle/2HOD01W0/9627]  
专题机器人与3D打印技术创新中心
通讯作者Chen, Dengfu; Duan, Xuanming
作者单位1.Chongqing Key Lab Addit Mfg Technol & Syst, Chongqing 400714, Peoples R China
2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
3.Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
推荐引用方式
GB/T 7714		 Tang, Pingmei,Xie, Haiqiong,Wang, Sen,et al. Numerical Analysis of Molten Pool Behavior and Spatter Formation with Evaporation During Selective Laser Melting of 316L Stainless Steel[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,2019,50(5):2273-2283.
APA Tang, Pingmei.,Xie, Haiqiong.,Wang, Sen.,Ding, Xueping.,Zhang, Qi.,...&Duan, Xuanming.(2019).Numerical Analysis of Molten Pool Behavior and Spatter Formation with Evaporation During Selective Laser Melting of 316L Stainless Steel.METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,50(5),2273-2283.
MLA Tang, Pingmei,et al."Numerical Analysis of Molten Pool Behavior and Spatter Formation with Evaporation During Selective Laser Melting of 316L Stainless Steel".METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE 50.5(2019):2273-2283.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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