Effect of Mg on the Microstructure and Mechanical Properties of Al0.3Sc0.15Zr-TiB2 Composite

被引：0
|
作者：
A. K. Lohar
B. N. Mondal
S. C. Panigrahi
机构：
[1] CAMP,Department of Metallurgy and Materials Engineering
[2] CMERI (CSIR),undefined
[3] IIT,undefined
来源：
Journal of Materials Engineering and Performance | 2011年 / 20卷
关键词：
Al-Mg alloy; Al-Sc and Al-Zr; grain refinement; TiB; particles;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Al-0.3Sc-0.15Zr-TiB2 composites with varying additions of Mg were cast through a novel processing technique using oil Quenched Investment Casting (QIC). Addition of Mg resulted in grain refinement of the composite. Al3(Sc, Zr) primary particles and TiB2 are responsible for grain refinement in these composites. Presence of fine nanosized uniformly distributed precipitates of Al3(Sc, Zr) at the peak age condition together with TiB2 particles increase the strength and ductility of the composites. The presence of Sc and Zr reduces the size of TiB2 particles down to 10 nm. The optimum magnesium content in the composites studied lies between 3.5 and 6%.
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页码：1575 / 1582
页数：7
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