【摘要】 通过加入TiO2粉末原位制备了Al2O3颗粒增强铝基复合材料，分析了（Al2O3）p／Al材料的微观结构，测试了材料的布氏硬度和抗拉强度随所加TiO2粉未重量百分数的变化。结果表明：Mg的加入改善了颗粒与基体的浸润性，加入5％的TiO2时，复合材料具有最好的综合性能，随着Al2O3颗粒体积分数的升高，材料性能下降，Al2O3颗粒的偏聚是其主要原因。更多还原

【Abstract】 The reseach of Al2O3 particles reinforcod aluminum composites fabricated by in -suit techniq-ues is discribed in this article.The microstructures were analysed and the HB bardness and the tensile properties were tested.The result show that it is necessary to alloy Al melt with Mg so as to improve the Wittability of the enforcement and Almelt .The composites obtained with 5 percant TiO2 particles hav a uniform particulate ditsribution and their HB hardness and the tensile are the highest ,With the rising of volume containing of Al2O3 particles ,the properties of the composites are worse The reseach in dicates that the main reason is the assemble of Al2O3 particles .更多还原