Simultaneous improvement of strength and ductility in hypoeutectic Al-Si-Mg and Al-Mg alloys with high contents of Mg

被引：2
|
作者：
Ha, S. -H [1 ]
Lee, S. -Y [1 ]
Yoon, Y. -O [1 ]
Kim, B. -H [1 ]
Lim, H. -K [1 ]
Kim, S. -K [1 ]
机构：
[1] Korea Inst Ind Technol, 156 Gaetbeol Ro, Incheon 21999, South Korea
来源：
MATERIALS TODAY-PROCEEDINGS | 2019年 / 10卷
关键词：
Al-Si-Mg system; Al-Mg system; Ca; tensile property; Mg2Si; CAO;
D O I：
10.1016/j.matpr.2018.10.413
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Changes of strength and ductility in a hypoeutectic Al-7mass% Si-Mg with increasing Mg content and Al-7.5mass% Mg alloys with increasing Ca content were investigated. The elongation of Al-7.5mass% Mg alloy was improved with increasing Ca content up to 0.1mass% without trade-off with the strength. With increasing Mg and Ca contents simultaneously, the Al-7mass% Si alloys showed the modification of eutectic Si particles. After aging, the alloys had the distribution of residual Mg2Si in their grain boundaries with increasing Mg content over the Mg solubility. Al-7mass% Si-0.8mass% Mg alloy including a small amount of residual Mg2Si showed a significant improvement of strength after the aging. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：327 / 331
页数：5
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