Al_2O_3颗粒增强共晶成分铝锰基复合材料冲蚀磨损性能研究  

Study on Erosion-Wear of Al_2O_3 Particle Reinforced Al-Mn Matrix Cast Composites with Eutectic

作　　者：贾伯早[1] 刘炳[1] 李振华[1] 方佳[1] 代廷海[1] 

机构地区：[1]新疆大学机械工程学院,乌鲁木齐830047

出　　处：《材料导报》2010年第20期43-45,51,共4页Materials Reports

基　　金：国家自然科学基金资助项目(50861008)

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Al-2.06%Mn复合材料的抗冲蚀磨损性能优于Al-2.15%Mn合金。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.

关 键 词：复合材料 铝锰合金 磨粒粒径 冲蚀速度 冲蚀磨损 

分 类 号：TB333[一般工业技术—材料科学与工程]