Densification,microstructural features and tensile properties of selective laser melted AlMgSiScZr alloy from single track to block specimen

作     者：BI Jiang CHEN Yan-bin CHEN Xi STAROSTENKOV M D DONG Guo-jiang 毕江;陈彦宾;陈曦;STAROSTENKOV M D;董国疆

作者机构：Key Laboratory of Advanced Forging&Stamping Technology and Science of Ministry of EducationYanshan UniversityQinhuangdao 066004China State Key Laboratory of Advanced Welding and JoiningHarbin Institute of TechnologyHarbin 150001China General Physics DepartmentPolzunov Altai State Technical UniversityBarnaul 656038Russia 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2021年第28卷第4期

页      面：1129-1143页

核心收录：

学科分类：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）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Project(51775481)supported by the National Natural Science Foundation of China Project(E2019203418)supported by the Natural Science Foundation of Hebei Province,China 

主　　题：selective laser melting aluminum alloy hatch spacing microstructural feature tensile properties 

摘      要：The selective laser melting(SLM)processed aluminum alloys have already aroused researchers’attention in aerospace,rail transport and petrochemical engineering due to the comprehensive advantages of low density,good corrosion resistance and high mechanical *** this paper,an Al-14.1Mg-0.47Si-0.31Sc-0.17Zr alloy was fabricated via *** characteristics of single track at different process parameters,and the influence of hatch spacing on densification,microstructural features and tensile properties of block specimens were systematically *** hatch spacing has an influence on the overlap ratio of single track,and further affects the internal forming quality of printed *** a laser power of 160 W and scanning speed of 400 mm/s,the densification of block specimen increased first and then decreased with the increase of hatch *** nearly full dense specimen(98.7%)with a tensile strength of 452 MPa was fabricated at a hatch spacing of 80μ*** characteristics of dimple and cleavage on the tensile fracture of the AlMgSiScZr alloy showed the mixed fracture of ductility and brittleness.