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在铸铁摩擦副油润滑和线接触的滑动条件下，测定了试样摩擦磨损表面层的温度及其温度分布梯度，考察了表面层的相变特点、组织结构和形貌特征，并且分析了温度对磨损机制转化的影响．可以将摩擦磨损表面的热效应分为３个区：弱热效应区（对应于塑性流动磨损区）、热效应区（对应于氧化磨损区）和强热效应区（对应于严重磨损区）．在临界载荷前，表面层的γ相含量增加，但到临界载荷时，由于表面层的剥落，γ相的含量明显减少．摩擦磨损表面的强热效应是导致表面层塑性流动、αγ相变、γ相含量增大、氧化物膜破裂、粘着和擦伤发生的重要原因．
The temperature and temperature distribution gradient of friction and wear surface layer were measured under sliding conditions of oil friction and line contact of cast iron friction pair. The phase change characteristics, microstructure and morphology of the surface layer were investigated. The temperature Impact on Wear Mechanism Transformation. The thermal effects on the tribological surfaces can be divided into three zones: weak heat effect zone (corresponding to plastic flow wear zone), thermal effect zone (corresponding to oxidative wear zone), and intense heat effect zone (corresponding to severe wear zone). Before the critical load, the γ phase content of the surface layer increases, but at the critical load, the γ phase content is significantly reduced due to the spalling of the surface layer. The strong heat effect on the friction and wear surface is the important reason that causes the plastic flow of the surface layer, αγ phase transformation, γ phase content increase, oxide film rupture, adhesion and abrasion.