The quenching and partitioning (Q&P) heat treatment was applied to ductile cast iron. The wear resistance of specimens under different states was tested by reciprocating friction and wear tester. The microstructures of the matrix were characterized by optical microscopy, scanning electron microscopy, transmission electron microscopy and x-ray diffraction. The mechanical properties and friction coefficient were measured and the wear rates were calculated. After Q&P treatment, the wear resistance of ductile iron was greatly improved due to the increase in hardness. The analysis results of the worn surface show that the friction load and mechanical properties have a great influence on wear mechanism. From the friction properties and phase analysis of the Q&P-treated specimens, it was found that martensitic transformation occurs in the process of friction, which strengthens the matrix and improves the wear resistance.

淬火和分配（Q＆P）热处理应用于球墨铸铁。通过往复摩擦磨损测试仪测试了不同状态下的试样的耐磨性。通过光学显微镜，扫描电子显微镜，透射电子显微镜和X射线衍射对基质的微观结构进行表征。测量机械性能和摩擦系数，并计算磨损率。经过Q＆P处理后，由于硬度增加，球墨铸铁的耐磨性大大提高。磨损表面的分析结果表明，摩擦载荷和力学性能对磨损机理有很大影响。通过Q＆P处理的试样的摩擦性能和相分析，