中文摘要：

通过对Al2O3颗粒增强Al-2．06％Mn复合材料和Al-2．15％Mn合金在不同磨粒粒径、不同冲蚀速度的冲蚀磨损试验，探索了材料的冲蚀失效规律及其微观破坏机制。结果表明，两种材料在7m／s冲蚀速度下的冲蚀磨损失重率是在3．5m／s冲刷速度下的2～3倍；两种材料的冲蚀磨损失重率随着磨粒粒径的增大先增大后减小，磨粒粒径分布在0．053-0．106mm时两种材料的失重率出现极大值，Al2O3颗粒增强A1—2．06％Mn复合材料的抗冲蚀磨损性能优于Al-2．15％Mn合金。

英文摘要：

The properties of erosion-wear resistance of AI2 03 particle-reinforced Al-2. 06% Mn composite and Al-2.15%Mn alloy are tested with different particle size and erosion velocities, and the erosion-wear failure and microdamage mechanism of materials are discussed. The results show that the weight loss of erosion-wear of both materials with a erosion velocity of 7m/s is two to three times that of 3. 5m/s. As the increase of particle size, the weight loss of erosion-wear of both materials shows an initial increase followed by a decrease, the peak value appears when the particle size within 0. 053-0. 106mm, the erosion resistance performance of A1203 particle-reinforced Al-2.06% Mn composite is superior to Al-2. 15%Mn alloy.