论文部分内容阅读
以T6态Al-20Si-5Cu合金为研究对象,采用UMT-2型摩擦磨损试验机研究材料的摩擦磨损性能,并用SEM、EDS、奥林巴斯激光共焦扫描显微镜OLS4000分析材料的常温摩擦磨损行为。结果表明:Al-20Si-5Cu合金的磨损率随着附加载荷的增加而增大,但在高载荷下磨损率仍然很小,表现出了良好的耐磨性;摩擦系数平均值在0.38~0.42范围内变化,且在磨损过程中随时间的变化不大,表现出了较强的稳定性;同时,随着载荷的增大,材料的磨损机制发生改变,由低载荷的氧化磨损、磨粒磨损转变为疲劳磨损。
The tribological properties of Al-20Si-5Cu alloy in T6 state were studied by using UMT-2 friction and wear tester. The friction and wear properties of the material at room temperature were analyzed by SEM, EDS and Olympus laser confocal scanning microscope OLS4000. behavior. The results show that the wear rate of Al-20Si-5Cu alloy increases with the increase of the additional load, but the wear rate of Al-20Si-5Cu alloy remains small with high wear resistance. The average friction coefficient is between 0.38 and 0.42 Range, and changes little with the time in the wear process, showing a strong stability; the same time, as the load increases, the wear mechanism of the material changes from low-load oxidation wear, abrasive particles Wear changes to fatigue wear.