选区激光熔化Al-Mg-Sc-Zr铝合金成形过程数值模拟  

Numerical simulation of selective laser melting process of Al-Mg-Sc-Zr aluminum alloy

作　　者：肖罡 张喜龙[4] 项菲菲 郭鹏程[1,3,4] 项忠珂 杨钦文[3] XIAO Gang;ZHANG Xi-long;XIANG Fei-fei;GUO Peng-cheng;XIANG Zhong-ke;YANG Qin-wen(School of Artificial Intelligence/Center for Modern Educational Technology,Jiangxi University of Science and Technology,Nanchang 330098,China;Jiangxi Copper Technology Research Institute Co.,Ltd.,Nanchang 330096,China;School of Mechanical and Vehicle Engineering,Hunan University,Changsha 410082,China;School of Mechanical and Intelligent Manufacturing Engineering,Central South University of Forestry and Technology,Changsha 410004,China)

机构地区：[1]江西科技学院人工智能学院/现代教育技术中心,江西南昌330098 [2]江西铜业技术研究院有限公司,江西南昌330096 [3]湖南大学机械与运载工程学院,湖南长沙410082 [4]中南林业科技大学机械与智能制造工程学院,湖南长沙410004

出　　处：《塑性工程学报》2024年第11期112-122,共11页Journal of Plasticity Engineering

基　　金：江西省教育厅科学技术研究项目(GJJ2202620);江西省自然科学基金资助项目(20224ACB218002);国家自然科学基金资助项目(52075159)。

摘　　要：基于Al-Mg-Sc-Zr合金粉末,建立了选区激光熔化(SLM)三维有限元模型,分析了Al-Mg-Sc-Zr合金的SLM成形过程,并进行了试验验证。结果表明:AM Modeler插件能够极大地缩短计算时间,效率提升57%。温度场中,基于AM Modeler插件模拟得到的最高温度比DFLUX用户子程序低365℃,比DFLUX用户子程序模拟结果低;应力场中,AM Modeler插件模拟的残余应力偏高,成形区域的最大残余应力比DFLUX用户子程序模拟结果高45 MPa。AM Modeler插件和DFLUX用户子程序模拟的熔池平均宽度分别为117.06和128.31μm,道次间平均搭接率分别为36.39%和45.15%。相同工艺参数下SLM试样的熔池平均宽度和熔池平均搭接率分别为136.11μm和40.75%。AM Modeler插件和DFLUX用户子程序模拟的熔池宽度与试验结果的偏差为14.0%和5.7%,搭接率与试验结果的分别偏差为10.7%和10.8%。通过DFLUX用户子程序进行Al-Mg-Sc-Zr高强铝合金SLM成形模拟能获得更高的精度,但与AM Modeler插件相比其效率偏低。Based on Al-Mg-Sc-Zr alloy powder,the three-dimensional finite element model of selective laser melting(SLM)was established to analyze the SLM forming process of Al-Mg-Sc-Zr alloy,and tests verification were carried out.The results show that the AM Modeler plug-in can greatly reduce computing time and increase the efficiency by 57%.In the temperature field,the maximum temperature simulated by AM Modeler plug-in is 365℃lower than that by DFLUX user subroutine.In the stress field,the residual stress simulated by AM modeler plug-in is much higher,and the maximum residual stress of the forming region is 45 MPa higher than that by DFLUX user subroutin.The average weld pool width simulated by AM Modeler plug-in and DFLUX user subroutine is 117.06 and 128.31μm,respectively,and the average overlap rate between the two passes is 36.39%and 45.15%,respectively.Under the same process parame-ters,the average width and the average overlap ratio of the molten weld pool of the SLM sample are 136.11μm and 40.75%,respective-ly.The deviations of the melt pool width simulated by the AM Modeler plug-in and DFLUX user subroutine from the test results are 14.0%and 5.7%,and the deviations of the overlap ratio from the test results are 10.7%and 10.8%,respectively.The SLM forming simulation of Al-Mg-Sc-Zr high strength aluminum alloy using DFLUX user subroutine can obtain higher accuracy,but its efficiency is lower than that of AM Modeler plug-in.

关 键 词：Al-Mg-Sc-Zr 选区激光熔化 增材制造 DFLUX用户子程序 AM Modeler 

分 类 号：TG146.4[一般工业技术—材料科学与工程]