两种热作模具钢高温耐磨性对比研究

发布时间：2018-04-11 03:34

  本文选题：热作模具钢 + 高温摩擦磨损　； 参考：《摩擦学学报》2017年01期

【摘要】：在UMT-3高温摩擦磨损试验机上对两种热作模具钢的高温摩擦磨损特征进行了研究,通过扫描电子显微镜(SEM)和X射线衍射仪(XRD)等检测手段对磨损表面和截面的形貌特征及物相进行分析.试验结果表明:SDCMSS钢有较H13钢高的高温耐磨性.在试验温度范围,SDCM-SS钢摩擦系数和磨损率要小于H13钢.SDCM-SS钢在400~700℃发生轻微氧化磨损机制;H13钢在400~500℃发生轻微氧化磨损机制,600和700℃发生严重氧化磨损机制.SDCM-SS钢高氧化性和高热稳定性能使新型模具钢具有较H13钢更宽的轻微氧化磨损温度区间,从而具有好的高温耐磨性能.700℃时,SDCM-SS钢的碳化物在摩擦过程中会聚集在摩擦氧化物层与基体交界面形成碳化物层.此碳化物层有益于提高热作模具钢的高温耐磨性.
[Abstract]:The high temperature friction and wear characteristics of two hot working die steels were studied on UMT-3 high temperature friction and wear tester.The morphology and phase of wear surface and cross section were analyzed by means of scanning electron microscope (SEM) and X-ray diffractometer (XRD).The results show that the wear resistance of SDCMSS steel is higher than that of H13 steel.The friction coefficient and wear rate of SDCM-SS steel are smaller than that of SDCM-SS steel at 400 ~ 700 鈩，

本文编号：1734263