Effect of Heat Treatment Process on Microstructure and Mechanical Properties of Additive Manufacturing AlSi10Mg

Author of the article:ZHAO Juan, XING Rui, LI Wenying, LI Chen, ZHONG Yingying, ZHU Lin

Author's Workplace：Aerospace Science and Industry Defense Technology Research Testing Center, Beijing 100854, China

Key Words：additive manufacturing; AlSi10Mg;heat treatment; microstructure; mechanical property

Abstract：The chemical composition, microstructure and mechanical properties of additive manufactured AlSi10Mg alloy and traditional casting ZL104 alloy were compared and studied. The effects of annealing temperature and annealing time on microstructure and mechanical properties of additive manufactured AlSi10Mg alloy were studied. The results show that the mechanical properties of additive manufacturing AlSi10Mg alloy can meet the requirements of Rm≥380 MPa and A≥8% at T1 (180 ℃×12 h, air cooling) and T2 (230~250 ℃×2 h, air cooling).