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为了获得高温性能更优异的铝基复合材料，本文采用粉末冶金法制备了纳米Ａｌ２Ｏ３颗粒增强高温铝基复合材料，微观观察结果表明，在复合材料的基体上均匀分布着大量弥散的细小颗粒．在室温及高温下进行了拉伸实验，其结果表明，用纳米Ａｌ２Ｏ３颗粒增强的高温铝基复合材料高温下的强度损失率比其它的铝基复合材料要小．由结果可知：纳米Ａｌ２Ｏ３颗粒在高温时有利于复合材料的增强，纳米Ａｌ２Ｏ３颗粒增强高温铝基复合材料由于增强体和基体两方面的优势与其它铝基复合材料相比具有更好的高温性能．
In order to obtain more excellent high-temperature properties of aluminum matrix composites, this paper prepared by powder metallurgy nano-Al2O3 particles enhanced high-temperature aluminum matrix composites, microscopic observations showed that the matrix of the composite material uniformly distributed a large number of dispersed fine particles. Tensile tests were carried out at room temperature and elevated temperature. The results show that the strength loss rate of high temperature aluminum matrix composites reinforced with nano-Al2O3 particles is lower than that of other aluminum matrix composites. From the results, it can be seen that the nano-Al2O3 particles are beneficial to the reinforcement of the composites at high temperature. The nano-Al2O3 particles reinforced high-temperature aluminum matrix composites have better high-temperature properties compared with other aluminum matrix composites due to the advantages of the reinforcement and the matrix.