为了探索提高HM1钢耐磨性能的制备新途径，采用往复式滑动干摩擦实验研究了精密喷射成形HM1钢摩擦磨损性能并对其磨损机制进行了分析，同时还与铸态材料进行了对比。结果表明：不同载荷下，喷射态和喷射回火态HM1钢摩擦系数均低于铸态；当载荷为100 N时，与铸态相比，喷射态磨损量比其低约34％，喷射回火态磨损量比其减少约48％。对磨痕形貌分析表明，当载荷为40 N时，铸态试样以粘着磨损为主，当载荷为100 N时，转换为粘着磨损与磨粒磨损共存，并伴随严重的氧化磨损；对于喷射态和喷射回火态试样，则以磨粒磨损为主，氧化磨损减轻。
To improve the wear resistance of HM1 steel, the friction and wear properties of HM1 steel processed by precision spray forming ( PSF) were studied by dry friction of reciprocating sliding and the wear mechanisms were analyzed, and the results were compared to the as-casted HM1 steel. The results indicated that the friction coefficient of HM1 steel processed by precision spray forming and precision spray forming with tempering ( PSFT) was lower than that of the as-casted material. The wear rate of the PSFTed specimens was lower about 34% than that of the as-casted specimens under the loads of 100 N. While, the wear rate of the PSFTed specimens was lower about 48% than that of the as-casted specimens under the loads of 100 N. SEM morphology of wear scar showed that the mainly wear mechanism of the as-casted specimens under the load of 40 N was adhesive wear and the wear mechanism was converted to the coexistence of adhesive wear and abrasive wear with severely oxidation wear under the load of 100 N. While the wear mechanism of the PSFed and PSFTed specimens was mainly abrasive wear with mildly oxidation wear.
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