Effect of Scandium on Microstructure and Mechanical Properties of Cast Al-Si-Mg Alloy

被引：0
|
作者：
M. S. Kaiser
M. R. Basher
A. S. W. Kurny
机构：
[1] Bangladesh University of Engineering and Technology,Directorate of Advisory, Extension and Research Services
[2] Bangladesh University of Engineering and Technology,Department of Materials and Metallurgical Engineering
来源：
Journal of Materials Engineering and Performance | 2012年 / 21卷
关键词：
age hardening; Al-Si-Mg alloys; grain-refinement; precipitates; recrystallization;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Microstructural modification and grain refinement due to addition of scandium in Al-6Si-0.3Mg alloy has been studied in this article. It is seen from the microstructure that the dendrites of the cast Al-6Si-0.3Mg alloy have been refined significantly because of addition of scandium. Increasing amount of scandium leads to a greater dendrite refinement. The age hardening effect has been studied by subjecting the alloys containing varying amounts of scandium ranging from 0.2 to 0.6 wt.% to isochronal and isothermal aging at various temperatures for different times. It is observed that addition of scandium is the most effective in suppressing the softening effect during prolonged aging treatment.
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页码：1504 / 1508
页数：4
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