时效处理对低溶质Cu-Cr-Zr合金力学和电滑动磨损性能的影响

Effect of Aging Treatment on Mechanical and Sliding Wear Properties of Dilute Solute Cu-Cr-Zr Alloy Under Electric Current

在销 -盘式摩擦磨损试验机上进行了 Cu- Cr- Zr合金的电滑动摩擦磨损试验 ,考察了时效处理对其力学和电磨损性能的影响 ,并采用扫描电子显微镜对其磨损表面进行观察分析 .结果表明 :Cu- Cr- Zr合金的磨损率随时效温度的升高逐渐降低 ,在 5 0 0℃时达到最低值 ;随着时效温度的进一步升高 ,磨损率又开始增大 .在电流作用下 ,合金的磨损机制主要有粘着磨损、磨粒磨损与电侵蚀磨损 .在相同的摩擦磨损试验条件下 ,Cu- Cr- Zr合金的耐磨损性能明显优于Cu-

The wear resistance of Cu Cr Zr alloy sliding against brass in the presence of electric filed of various currents was examined on a pin on disk test rig. The effect of aging treatment on the mechanical and sliding wear resistance of Cu Cr Zr alloy under electric current was investigated. The worn surfaces of Cu Cr Zr alloy were analyzed with a scanning electron microscope. The test results show that the wear rate of the alloy decreases initially with the aging temperature and then increases to some extent when the temperature rises above 500 ℃. The smallest wear rate is reached for the alloy aged at 500 ℃ for 2h. The dominant wear mechanisms of the alloy against brass under electric current are adhesive wear, abrasive wear and arc erosion. Compared with Cu Ag wire alloy (CTHA110) under the same test condition, the Cu Cr Zr alloy has better wear resistance.