Microstructure and mechanical properties of Al-Fe-V-Si/SiCp composites

被引：4
|
作者：
陈振华
贺毅强
严红革
郝亮
陈志钢
陈刚
机构：
[1] Changsha 410082
[2] China
[3] College of Materials Science and Engineering Hunan University
来源：
TransactionsofNonferrousMetalsSocietyofChina | 2007年 / S1期
基金：
中国国家自然科学基金;
关键词：
heat resistant alloy; composite; spray deposition; microstructure; mechanical property;
D O I：
暂无
中图分类号：
TB33 [复合材料];
学科分类号：
0805 ; 080502 ;
摘要：
The characteristics of microstructures and mechanical properties of the multi-layer spray deposited SiCP/Al-6.5Fe-0.6V-1.3Si,SiCP/Al-8.5Fe-1.3V-1.7Si and SiCP/Al-10Fe-1.3V-2Si composite sheets obtained by rolling after extruding were investigated. The evolution of the grain and phases of these composites during processing were examined,and the influence of the microstructures on the mechanical properties was analyzed. The experimental results show that the ultimate tensile strengths σb of the three kinds of composite sheets are 420,535,470 MPa respectively at room temperature,and 232,285,300 MPa at 315 ℃ and 148,180,200 MPa at 400 ℃. The excellent mechanical properties can be attributed to the high solid solubility,fine grain size,Al12(Fe,V)3Si precipitation particles and the SiC particles. And the composition of the matrix alloy has an obvious effect on the mechanical properties of the as-rolled sheets.
引用
收藏
页码：238 / 243
页数：6
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