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通过粉末冶金制备了不同SiCp含量的SiCp增强铝基复合材料,研究了不同含量的SiCp对铝基复合材料工艺及组织性能的影响。结果表明,在压制成型时增加SiCp含量对模具有磨损;但在烧结时却能促进致密化。SiCp增强铝基复合材料的硬度开始是随SiCp含量增加而增加,在SiCp达到一定程度后反而呈下降趋势。SiCp含量在15%~30%时,复合材料具有较好的耐磨性。磨损机制是磨粒磨损和剥离磨损。
SiCp reinforced aluminum matrix composites with different content of SiCp were prepared by powder metallurgy. The effects of different content of SiCp on the microstructure and mechanical properties of the aluminum matrix composites were investigated. The results show that increasing SiCp content during press-forming has wear on the mold; however, densification can be promoted during sintering. The hardness of SiCp reinforced aluminum matrix composites began to increase with increasing SiCp content, but declined after SiCp reached a certain extent. SiCp content of 15% to 30%, the composite material has good wear resistance. The wear mechanism is abrasive wear and peel wear.