简介概要

Properties and microstructures of 7075/SiCp composites prepared by spray deposition

来源期刊:中国有色金属学报(英文版)2003年第5期

论文作者:袁武华 陈振华 徐海洋 张福全 傅定发

文章页码:1160 - 1163

Key words:Al matrix composite; rapid solidification; spray deposition

Abstract: The 7075/SiCp composites were prepared by spray deposition, extrusion and heat treatment technologies. The microstructures of the deposit, the extruded and heat-treated bars were analyzed. And the mechanical properties and wearing resistance were tested and compared with other aluminum alloys. The results show that the spray deposited preform presents fine microstructure and uniformly distributed SiC particles. Compared with the matrix alloy, the yield strength, modulus and wearing resistance of the peak-aged composites are improved markedly with 50% reduction of elongation. It indicates that the addition of SiC particles greatly contributes to the refining of microstructure and the altering of fracture and wearing mechanisms.



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