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在SRVⅣ微动摩擦磨损试验机上研究了不同热处理技术的18Cr2Ni4WA钢微动磨损行为,论述了磨损机理。结果表明:在试验条件下,渗碳+激光淬火试样的硬度约为760HV,微动磨损性能最好,其次为渗碳+低温回火试样和淬火+低温回火试样;在不同载荷和振幅时,正火+高温回火试样的摩擦系数最大,其次为淬火+低温回火试样和渗碳+低温回火试样,摩擦系数最小的为渗碳+激光表面淬火试样;3D形貌图显示,微动磨损后,在试样接触点形成了一个圆形凹坑,整个微动磨斑从磨损形貌上可以分为两个区域,磨斑中心的凹坑较深,微动磨损比较严重,周边区域微动磨损相对较轻。
The fretting wear behavior of 18Cr2Ni4WA steel with different heat treatment techniques was studied on SRV Ⅳ fretting friction and wear tester, and the wear mechanism was discussed. The results show that under the test conditions, the hardness of carburizing + laser quenching is about 760HV, the fretting wear is the best, followed by carburizing + low temperature tempering and quenching + low temperature tempering; under different load And amplitude, the friction coefficient of normalized and high temperature tempered samples is the largest, followed by quenched + lowtemperature tempered samples and carburized + lowtempered tempered samples, the least friction coefficient is carburized + laser surface quenched sample; The 3D topography shows that after the fretting wear, a circular dimple is formed at the contact point of the sample. The fretting wear spot can be divided into two regions from the wear morphology. The dimples in the center of the wear spot are deep, Fretting wear more serious fretting wear and tear in the surrounding area is relatively light.