Composition Optimization for A206/Al2O3 Nanocomposite

被引：0
|
作者：
Sun, Y. [1 ]
Choi, H. [1 ]
Li, X. C. [1 ]
机构：
[1] Univ Wisconsin, Madison, WI 53706 USA
来源：
TRANSACTIONS OF THE AMERICAN FOUNDRY SOCIETY, VOL 121 | 2013年 / 121卷
关键词：
Nanocomposite; A206; Al2O3; nanoparticle; alloy elements content; master nanocomposite; GRAIN-REFINEMENT; MECHANICAL-PROPERTIES; ALUMINUM; ALLOY; NUCLEATION; TITANIUM; SI; CU; BORON;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The gamma-Al2O3 nanoparticles can have significant impact to hot tearing resistance of an A206 alloy. This makes the A206/Al2O3 nanocomposite a promising material for automotive and aerospace industries. In this work, a parametric study of the effect of Cu, Mg and Ti content on the mechanical properties of A206/Al2O3 nanocomposite is conducted. Additional Cu and Mg can strengthen the alloy at the cost of ductility, while Al2O3 nanoparticles can refine the CuAl2 networks to a smaller and rounder shape, which leads to a better ductility for the A206/Al2O3 nanocomposite. Moreover, additional Ti can further refine the A206 matrix to enhance mechanical properties. The optimized combination of composition for an A206/Al2O3 nanocomposite was obtained based on tensile test results and microstructure analysis. This result could be utilized in the large-scale production to achieve both outstanding mechanical properties and hot tearing resistance of A206/Al2O3 nanocomposites.
引用
收藏
页码：205 / 215
页数：11
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