Synergistic effects of composition and heat treatment on microstructure and properties of vacuum die cast Al-Si-Mg-Mn alloys

作     者：Jun-jie Xu Ye Pan Tao Lu Bing Bo 

作者机构：School of Materials Science and Engineering Southeast University Jiangsu Key Laboratory for Advanced Metallic Materials 

基　　金：financially supported by the Jiangsu province transformation of scientific and technological achievements program(BA2015041) the Jiangsu key laboratory for advanced metallic materials(BM2007204) 

出 版 物：《China Foundry》 (中国铸造（英文版）)

年 卷 期：2018年第15卷第2期

页      码：117-123页

摘      要：The purpose of this study was to prepare high-quality Al-Si-Mg-Mn alloy with a good combination of strength and ductility employing the vacuum-assisted high-pressure die cast process. An orthogonal study of heat treatments was conducted to design an optimized T6 heat treatment process for both Al-10%Si-0.3%Mg-Mn and Al-11%Si-0.6%Mg-Mn alloys. The results demonstrate that no obvious blisters and warpage were observed in these two alloys with solid solution treatment. After the optimal T6 heat treatment of 530°C×3 h + 165°C×6 h, Al-11%Si-0.6%Mg-Mn alloy has better mechanical properties, of which tensile strength, yield strength and elongation reached 377.3 MPa, 307.8 MPa and 9%, respectively. The improvement of mechanical properties can be attributed to the high density of needle-like β″(Mg_5Si_6) precipitation after aging treatment and the fine and spherical eutectic Si particles uniformly distributed in the α-Al matrix.

主 题 词：热处理过程 合金设计 机械性质 微观结构 真空 演员 老化处理 MPa 

学科分类：080503[080503] 0806[工学-电气类] 08[工学] 0805[工学-能源动力学] 0703[理学-化学类] 0802[工学-机械学] 0702[理学-物理学类] 080201[080201] 

核心收录：

D　O　I：10.1007/s41230-018-7253-y

馆 藏 号：203285979...