采用粉末冶金瞬时液相烧结法制备Al-Fe-Si/Al原位复合材料.利用X射线衍射仪(XRD)、扫描电镜(SEM)、能谱分析(EDS)以及M2000型磨损试验机研究Al含量对原位复合材料的微观结构、硬度和耐磨性的影响.结果表明:随着Al含量的增加,粗大FeAl相消失,针状的金属间化合物增强体Al05FeSi0.5长大成短棒状.当Al质量分数为77％时,细小的短棒状Al0.5 FeSi0.5增强相弥散分布在基体中,复合材料硬度HV具有最高值283.7,其硬度约是纯铝的8倍,铝硅合金的2.5倍;复合材料的耐磨性约为纯铝的6.6倍,铝硅合金的4.5倍;耐磨性能最佳,磨损率为0.3781％,磨损机制为磨粒磨损.
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