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在MG-2000销盘式磨损试验机上考察了TC4/GCr15摩擦体系中,TC4合金的磨损行为.利用SEM、XRD对合金磨面、剖面形貌及结构进行观察与分析,利用HVS-1000显微硬度计测试磨面至心部的硬度,利用激光共聚焦显微镜测试和观察磨面的粗糙度及三维形貌.结果表明:TC4合金的磨面形成了摩擦层,其分为有氧化物摩擦层和无氧化物摩擦层,无氧化物摩擦层对磨面无保护作用,合金磨损率较高;有氧化物摩擦层对磨面具有保护作用.在600°C,摩擦层中含有大量摩擦氧化物,对磨面具有最佳的保护作用,合金磨损率最低,TC4合金具有优异的高温磨损性能.磨面粗糙度和摩擦层中的氧化物数量密切相关,在600°C,磨面被大量光滑氧化物所覆盖,磨面粗糙度最低,略高于磨损前的表面粗糙度.
The wear behavior of TC4 alloy in TC4 / GCr15 friction system was investigated on a MG-2000 pin-on-disc wear tester. The wear surface, cross-sectional morphology and structure of the alloy were observed and analyzed by SEM and XRD. The hardness of the grinding surface to the heart part was measured by a durometer and the roughness and the three-dimensional topography of the grinding surface were measured by laser confocal microscopy.The results show that the friction layer formed on the grinding surface of the TC4 alloy is divided into an oxide friction layer And non-oxide friction layer, non-oxide friction layer has no protective effect on the grinding surface, the wear rate of the alloy is higher; the oxide friction layer has a protective effect on the grinding surface.At 600 ° C, the friction layer contains a large amount of friction oxide , The best protection of the grinding surface, the lowest wear rate of the alloy, TC4 alloy has excellent high temperature wear performance. Roughness of the surface roughness and friction layer is closely related to the amount of oxides at 600 ° C, the grinding surface is a lot of smooth Oxide coverage, grinding the lowest roughness, slightly higher than the surface roughness before wear.