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由ＴｉＯ２ＡｌＢＣｕＯ体系制备了原位Ａｌ２Ｏ３和ＴｉＢ２粒子增强Ａｌ３．２％Ｃｕ和Ａｌ６．０％Ｃｕ合金基复合材料。Ｘ射线衍射分析表明，在两种复合材料中均有Ａｌ２Ｏ３和ＴｉＢ２生成，没有发现Ａｌ３Ｔｉ相产生。原位生成的Ａｌ２Ｏ３和ＴｉＢ２粒子为尺寸小于２μｍ的等轴状粒子，在Ａｌ基体中均匀分布。室温拉伸试验表明两种ＡｌＣｕ合金基原位复合材料具有很高的强度，并且随着基体合金中Ｃｕ含量的增加复合材料的强度增加。动态压缩试验表明，这种ＡｌＣｕ合金基原位复合材料的强度对应变速率是不敏感的，这可由不同应变速率变形后的复合材料基体中位错密度大致相同来解释。高温压缩蠕变试验表明，两种复合材料均表现出高的显态应力指数。随基体合金中Ｃｕ含量的增加复合材料的蠕变抗力明显提高。
In-situ Al2O3 and TiB2 particle reinforced Al3.2% Cu and Al6.0% Cu alloy matrix composites were prepared from TiO2AlBCuO system. X-ray diffraction analysis showed that Al2O3 and TiB2 were formed in both composites and no Al3Ti phase was found. The in-situ Al 2 O 3 and TiB 2 particles are equiaxed particles less than 2 μm in size and uniformly distributed in the Al matrix. Tensile tests at room temperature show that the two Al-Cu alloy-based in-situ composites have high strength and the strength of the composites increases with increasing Cu content in the matrix alloy. Dynamic compression tests show that the strength of the Al-Cu alloy in-situ composites is insensitive to strain rate, which can be explained by the approximately same dislocation density in the composite matrix with different strain rates. High temperature compression creep tests showed that both composites showed high apparent stress index. With the increase of Cu content in the matrix alloy, the creep resistance of the composite increases obviously.