Effect of internal defects on tensile strength in SLM additively-manufactured aluminum alloys by simulation

作     者：Xin SONG Bowen FU Xin CHEN Jiazhen ZHANG Tong LIU Chunpeng YANG Yifan YE Xin SONG;Bowen FU;Xin CHEN;Jiazhen ZHANG;Tong LIU;Chunpeng YANG;Yifan YE

作者机构：School of Mechanical Power EngineeringHarbin University of Science and TechnologyHarbin 150080China COMAC Beijing Aircraft Technology Research InstituteBeijing 102211China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2023年第36卷第10期

页      面：485-497页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：the Civil Aircraft Special Item of Ministry of Industry and Information Technology of the People’s Republic of China(No.MJZ-2017-F-13) 

主　　题：Additive manufacturing Internal defects Tensile strength Elasticity FEA Simulation experiments 

摘      要：This research investigates the effect of internal defects on the tensile strength of Selective Laser Melting(SLM)additively-manufactured aluminum alloy(AlSi10Mg)test parts used for civil aircraft light weight design.A Finite Element Analysis(FEA)model containing internal defects was established by combining test data and the stress concentration factor comparison *** effect of variation in the number,location and shape of defects on the finite element results was *** results show that it is reasonable to use spherical defect *** finite element modeling and analysis methods are also applied to the study of the effect of internal defects on tensile strength in additive manufacturing of other metallic *** to the FEA results of single defects at different scales,the formula for calculating the weakening degree of tensile strength applicable to the defective area of less than 15%was *** result of the procedure is reliable and *** research results can guide the selection of process parameters for the additive manufacturing of aluminum ***,the research results can promote the application of metal additive manufacturing in designing light-weight civil aircraft structures.