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Heat transfer and fluid flow of molten pool during selective laser melting of AlSi10Mg powder: Simulation and experiment

文献类型：期刊论文

作者Ding, Xueping1,2; Wang, Linzhi2
刊名JOURNAL OF MANUFACTURING PROCESSES
出版日期2017-04-01
卷号26页码:280-289
关键词Selective laser melting Point exposure Heat transfer Fluid flow Simulation
ISSN号1526-6125
DOI10.1016/j.jmapro.2017.02.009
通讯作者Wang, LZ (reprint author), Chongqing Key Lab Addit Mfg Technol & Syst, Chongqing 400714, Peoples R China.
英文摘要Numerical simulation of heat transfer and fluid flow during selective laser melting (SLM) under point exposure scan of AlSi10Mg powder is performed. The influence of exposure time and point distance on temperature field, velocity field, liquidus duration and dimension of molten pool is investigated. The results show that exposure time has negligible effect on heat transfer and fluid flow and it leads to little change of the dimension of molten pool. With the increase of point distance, the simulated temperature and dimension of molten pool increases. Moreover, the duration of liquidus molten pool changes little with exposure time and point distance. For verifying the accuracy of simulated results, experiments are performed. Compared the dimension of molten pool in simulated results with experimental ones, good agreement is obtained. In addition, when the combination of exposure time and point distance is optimized at 140 mu s and 130 mu m, a pretty dense and smooth surface free of apparent pores, cracks and balling effect could be acquired. Meanwhile, both the maximum density and microhardness are obtained. (C) 2017 The Society of Manufacturing Engineers. Published by Elsevier Ltd. All rights reserved.
资助项目National Natural Science Foundation of China[51405467] ; Chongqing Research of Application Foundation and Advanced Technology[cstc2016jcyj A0008] ; Chongqing Research of Application Foundation and Advanced Technology[cstc2016jcyjA0059] ; Key Programs of the Chinese Academy of Sciences[KGZD-EW-T0] ; State Key Lab of Advanced Welding and Joining, Harbin Institute of Technology[AMJ-M16-03]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000401594000028
出版者ELSEVIER SCI LTD
源URL[http://119.78.100.138/handle/2HOD01W0/3723]  
专题机器人与3D打印技术创新中心
通讯作者Wang, Linzhi
作者单位1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
2.Chongqing Key Lab Addit Mfg Technol & Syst, Chongqing 400714, Peoples R China
推荐引用方式
GB/T 7714		 Ding, Xueping,Wang, Linzhi. Heat transfer and fluid flow of molten pool during selective laser melting of AlSi10Mg powder: Simulation and experiment[J]. JOURNAL OF MANUFACTURING PROCESSES,2017,26:280-289.
APA Ding, Xueping,&Wang, Linzhi.(2017).Heat transfer and fluid flow of molten pool during selective laser melting of AlSi10Mg powder: Simulation and experiment.JOURNAL OF MANUFACTURING PROCESSES,26,280-289.
MLA Ding, Xueping,et al."Heat transfer and fluid flow of molten pool during selective laser melting of AlSi10Mg powder: Simulation and experiment".JOURNAL OF MANUFACTURING PROCESSES 26(2017):280-289.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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