Effect of Sc and Sr on the Eutectic Si Morphology and Tensile Properties of Al-Si-Mg Alloy

被引：1
作者：
Cong Xu
Fang Wang
Hussain Mudassar
Chengyuan Wang
Shuji Hanada
Wenlong Xiao
Chaoli Ma
机构：
[1] Beihang University (BUAA),Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Material Science and Engineering
[2] Tohoku University,Institute for Materials Research
来源：
Journal of Materials Engineering and Performance | 2017年 / 26卷
关键词：
Al-Si-Mg; mechanical properties; microstructure; modification; Sr and Sc;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
To study the effect of Sc and Sr additions on modifying eutectic silicon particles and mechanical properties for Al-Si-Mg casting alloy, they were added with different amounts in F357 alloy without beryllium addition in the present work. It was found that (0.4 wt.% Sc and 0.04 wt.% Sr)-modified F357 alloy presented the optimal tensile properties when compared with the individual addition of Sc or Sr. This was mainly attributed to the synergic modification of eutectic Si in F357 alloys due to the combined additions of Sc and Sr. The silicon modification mechanisms via Sc and Sr were emphasized to be examined in this paper, and the fracture mechanism of the obtained alloys was also discussed.
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页码：1605 / 1613
页数：8
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