Microstructure and mechanical properties of Al-Al4C3materials

被引：0
|
作者：
Besterci, M [1 ]
Parilák, L [1 ]
机构：
[1] Slovak Acad Sci, Mat Res Inst, Kosice 04353, Slovakia
来源：
METALLIC MATERIALS WITH HIGH STRUCTURAL EFFICIENCY | 2004年 / 146卷
关键词：
dispersion strengthened materials; aluminum; microstructure; mechanical properties;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Dispersion strengthened aluminum compacts have been prepared by powder metallurgy. The base microstructure is aluminum matrix strengthened with dispersed ceramic particles. The strengthening is direct by dislocation movement retardation, and indirect by deformation induced microstructure modification in the next technological steps. The method of mechanical alloying process is described. Carbon transformation to carbide Al4C3 is characterised for different heat treatment schedules and nine commercial carbon powders tested. The micromechanism of carbon incorporation into the metallic powder, and the compacting of it-are described. The influence of dispersed carbides on mechanical properties is evaluated together with the influence of deformation on microstructure and properties. Ductility anomalies up to a type of superplasticity were observed at certain tensile testing strain rates.
引用
收藏
页码：195 / 202
页数：8
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