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Numerical analysis of residual stress evolution of AlSi10Mg manufactured by selective laser melting

文献类型：期刊论文

作者Wu, Jiaojiao1; Wang, Linzhi1; An, Xuguang2
刊名OPTIK
出版日期2017
卷号137页码:65-78
关键词Selective laser melting Numerical simulation Laser exposure time Residual stress AlSi10Mg alloy
ISSN号0030-4026
DOI10.1016/j.ijleo.2017.02.060
通讯作者Wang, LZ (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing Key Lab Addit Mfg Technol & Syst, Chongqing 400714, Peoples R China.
英文摘要In selective laser melting (SLM) process, severe temperature gradients produce large residual stresses, which leading to part distortion and bad performance of alloy products. At present, numerical simulations are widely used to study temperature and residual stress filed within materials, nevertheless, the residual stress prediction of alloys in the way of discontinuous laser scanning is rare to be carried out for SLM manufacturing. This study is aim to establish proper numerical models to investigate residual stress evolution of AlSilOMg alloy in point exposure SLM process. Firstly, a concept of moving equivalent heat source has been developed to act on powder bed's surfaces to simulate corresponding SLM process. Then, local temperature field within alloy parts are obtained by the built heat transfer model. In next, the derived temperature results are imported into the built solid mechanical model as a predefined field to analyze residual stress field of AlSi10Mg alloy parts. The consequence of numerical analysis is that, with laser exposure time increasing, the residual stress within alloy parts are gradually rising up. At last, residual stress of AlSi10Mg alloy parts are measured through experiments. The experimental data coincide with simulated results very well, which validates the reliability of established numerical models on residual stress evaluation of alloys during discontinuous laser scanning in SLM manufacture field. (C) 2017 Elsevier GmbH. All rights reserved.
资助项目Chinese National Natural Science Foundation[51405467] ; Chongqing Advanced Technology and Application Research Foundation[cstc2016jcyj A0008] ; Application and Key Programs of the Chinese Academy of Sciences[KGZD-EW-T0]
WOS研究方向Optics
语种英语
WOS记录号WOS:000401399900010
出版者ELSEVIER GMBH, URBAN & FISCHER VERLAG
源URL[http://119.78.100.138/handle/2HOD01W0/3730]  
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 Key Lab Addit Mfg Technol & Syst, Chongqing 400714, Peoples R China
2.Sichuan Univ, Coll Mat Sci & Engn, Chengdu 610065, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Jiaojiao,Wang, Linzhi,An, Xuguang. Numerical analysis of residual stress evolution of AlSi10Mg manufactured by selective laser melting[J]. OPTIK,2017,137:65-78.
APA Wu, Jiaojiao,Wang, Linzhi,&An, Xuguang.(2017).Numerical analysis of residual stress evolution of AlSi10Mg manufactured by selective laser melting.OPTIK,137,65-78.
MLA Wu, Jiaojiao,et al."Numerical analysis of residual stress evolution of AlSi10Mg manufactured by selective laser melting".OPTIK 137(2017):65-78.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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