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在模拟工况条件下,对6种冲击功下(2.0、2.5、3.0、3.5、4.0、4.SJ)ZGMn18的失重进行分析,并利用扫描电镜对冲击磨损后试样的表面形貌进行了观察,采用显微硬度计测试了磨损表层至基体的硬度。结果表明:ZGMn 18的冲击磨损失重并未随冲击功的增加而线性增大。结合每一种冲击功下磨损4h后的表面形貌和显微硬度测试结果发现,低冲击功(<3.0J)下ZGMn18以磨损介质造成的微观切削为主;高冲击功(>3.0J)下ZGMn18以磨损介质造成的表层剥落为主。
Under simulated working conditions, the weight loss of ZGMn18 under 6 kinds of impact energy (2.0,2.5,3.0,3.5,4.0,4.SJ) was analyzed. The surface morphology of the sample after impact wear was analyzed by scanning electron microscope Observation, the use of microhardness tester to test the wear surface hardness of the substrate. The results show that the impact wear loss of ZGMn 18 does not increase linearly with the impact energy. Combined with the surface morphology and microhardness test after 4h wear under each impact power, it was found that ZGMn18 was mainly micro-machined by wear media with low impact energy (<3.0J); high impact energy (> 3.0J) Under the ZGMn18 wear medium caused by the surface peeling.