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在模拟工况条件下,对不同冲击功下(2.0、2.5、3.0J)ZGMn13和ZGMn18的冲击磨损性能进行了测试,并利用扫描电镜和光学显微镜对试样的表面形貌和亚表层形貌进行了观察。结果表明:在每一种冲击功下,ZGMn18的冲击磨损失重均小于ZGMn13。在2.0J的冲击功下,ZGMn13和ZGMn18的冲击磨损机理为微观切削;在2.5J的冲击功下,ZGMn13和ZGMn18的冲击磨损机理为多次塑变机理;在3.0 J的冲击功下,ZGMn13的冲击磨损机理为变形疲劳磨损,ZGMn18的冲击磨损机理为亚表层裂纹引起的剥落。
The impact wear properties of ZGMn13 and ZGMn18 under different impact power (2.0,2.5,3.0J) were tested under simulated working conditions. The surface morphology and subsurface morphology of the samples were analyzed by SEM and optical microscope Observed. The results show that the impact wear loss of ZGMn18 is less than that of ZGMn13 under each impact energy. Under the impact energy of 2.0 J, the impact wear mechanism of ZGMn13 and ZGMn18 is micro-cutting. Under the impact energy of 2.5 J, the impact wear mechanism of ZGMn13 and ZGMn18 is multiple plastic deformation mechanism; under 3.0 J impact energy, ZGMn13 The impact wear mechanism is deformation fatigue wear, the impact wear mechanism of ZGMn18 is flaking caused by sub-surface cracks.