用熔铸法制备了ＳｉＣ， Ａ１２Ｏ３和 ＴｉＢ２颗粒增强 Ｆｅ－２８Ａｌ－５Ｃｒ基复合材料，研究了材料的 微观组织和力学性能，结果表明， Ａ１２Ｏ３在 Ｆｅ３Ａ１中的化学稳定性很好， ＴｉＢ２与基体发生了部分反应，ＳｉＣ与基体的反应严重，复合材料在室温和高温下的力学性能的变化说明，上述颗粒的加入使材料的强度较大幅度的提高，塑性有所下降 SiC, A12O3 and TiB2 particles reinforced Fe-28Al-5Cr matrix composites were prepared by melt casting. The microstructure and mechanical properties of the composites were studied. The results show that the chemical stability of A12O3 in Fe3A1 is very good, Part of the reaction, the reaction of SiC with the matrix serious, the mechanical properties of the composite at room temperature and high temperature changes that the addition of the above-mentioned particles greatly increased the strength of the material, plastic decreased