Influences of processing parameters and heat treatment on microstructure and mechanical behavior of Ti-6Al-4V fabricated using selective laser melting

作     者：Qi-Dong Sun Jie Sun Kai Guo Saad Waqar Jiang-Wei Liu Lei-Shuo Wang 

作者机构：Key Laboratory of High Efficiency and Clean Mechanical ManufactureNational Demonstration Center for Experimental Mechanical Engineering EducationSchool of Mechanical EngineeringShandong UniversityJinan250061People’s Republic of China Research Centre for Aeronautical Component Manufacturing Technology and EquipmentShandong UniversityJinan250061People’s Republic of China School of Energy and Power EngineeringShandong UniversityJinan250061People’s Republic of China School of Mechanical and Power EngineeringZhengzhou UniversityZhengzhou450001People’s Republic of China 

出 版 物：《Advances in Manufacturing》 (先进制造进展（英文版）)

年 卷 期：2022年第10卷第4期

页      面：520-540页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：The authors acknowledge the financial support provided by the Major Scientific and Technological Project of Shandong Province(Grant No.2019GGX104006) the Natural Science Foundation of Shandong Province(Grant No.ZR2020ME159) the Construction Engineering Special Fund of“Taishan Scholars”of Shandong Province(Grant No.ts20190975) 

主　　题：Selective laser melting(SLM) Ti-6Al-4V alloy Heat treatment Microstructure Mechanical properties 

摘      要：Selective laser melting(SLM)has provided an alternative to the conventional fabrication techniques for Ti-6Al-4V alloy parts because of its flexibility and ease in creating complex ***,this study investigated the effects of the process parameters and heat treatment on the microstructure and mechanical properties of Ti-6Al-4V fabricated using *** influences of various process parameters on the relative density,tensile properties,impact toughness,and hardness of Ti-6Al-4V alloy parts were *** employing parameter optimization,a high-density high-strength Ti-6Al-4V alloy was fabricated by SLM.A relative density of 99.45%,a tensile strength of 1188 MPa,and an elongation to failure of 9.5%were achieved for the SLM-fabricated Ti-6Al-4V alloy with optimized *** effects of annealing and solution aging heat treatment on the mechanical properties,phase composition,and microstructure of the SLM-fabricated Ti-6Al-4V alloy were also *** ductility of the heat-treated Ti-6Al-4V alloy was *** applying a heat treatment at 850℃ for 2 h,followed by furnace cooling,the elongation to failure and impact toughness were found to be increased from 9.5%to 12.5%,and from 24.13 J/cm^(2)to 47.51 J/cm^(2),respectively.