对三种不同超弹性的TiNi合金及20MnV钢表面多微凸体在法向载荷作用下的模型进行了有限元分析,并对超弹TiNi合金的磨损机制进行了探讨.结果表明,由于TiNi合金具有较高的最大弹性变形量,在相同载荷下,表面上参加接触的微凸体数目随着超弹性的增加而增多,产生的弹性接触面积及最大Mises弹性应变要明显大于20MnV;塑性接触面积及最大Mises塑性应变相对减小.弹性变形能力的增强和塑性应变的减小可以使TiNi合金缓解外部的冲击并能够在磨损过程中抵抗较多的循环载荷,从而表现出良好的耐磨性.
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