Finite Element Prediction of Residual Stress in Rhombic Dodecahedron Ti‑6Al‑4V Titanium Alloy Additively Manufactured by Electron Beam Melting

作     者：Shangzhou Zhang Yuankang Wang Bing Zhou Fanchao Meng Hua Zhang Shujun Li Qingmiao Hu Li Zhou Shangzhou Zhang;Yuankang Wang;Bing Zhou;Fanchao Meng;Hua Zhang;Shujun Li;Qingmiao Hu;Li Zhou

作者机构：Institute for Advanced Studies in Precision MaterialsYantai UniversityYantai 264005China School of Electromechanical and Automotive EngineeringYantai UniversityYantai 264005China Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2023年第36卷第1期

页      面：35-47页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the Natural Science Foundation of Shandong Province China(No.ZR2019MEM012) 

主　　题：Electron beam melting Ti-6Al-4V Rhombic dodecahedron Residual stress Finite element analysis Parametric study 

摘      要：In this work,a three-dimensional nonlinear transient thermo-mechanically coupled finite element model(FEM)is established to investigate the variation in temperature and stress fields during electron beam melting(EBM)of rhombic dodecahedron Ti-6Al-4V *** influence of the processing parameters on the temperature and residual stress evolutions was predicted and verified against existing literature *** calculated results indicate that the interlayer cooling time has very little effect on both the temperature and stress evolutions,indicating that the interlayer cooling time can be set up as short as possible to reduce manufacturing *** is presented that the residual stress of the intersection is higher than that of *** increasing preheating temperature,the residual stress decreases continuously,which is about 20%–30%for every 50℃rise in *** temperature and stress fields repeated every four layers with the complex periodic scanning *** x and y-component residual stresses are tensile stresses,while z-component stress is weak compressive or tensile stress in typical *** is proposed that the interlayer cooling is necessary to obtain a rhombic dodecahedron with low residual *** results can bring insights into the understanding of the residual stress during EBM.