【摘要】 通过显微组织分析、维氏硬度测试、摩擦磨损性能测试和磨损形貌观察，系统研究了不同热处理工艺对H11钢组织、硬度及摩擦磨损性能的影响。结果表明，热处理工艺对H11钢的显微组织、维氏硬度及摩擦磨损性能有显著影响。相比于1,000℃淬火和580℃一次回火后的H11钢，经1,000℃淬火+580℃回火两次处理后，H11钢的维氏硬度依然维持在较高水平，其硬度可达468HV，其显微组织为回火马氏体+弥散碳化物。H11钢经1,000℃油淬+580℃回火两次处理后，摩擦系数约为0.6，磨损量最小，表现出优异的摩擦磨损性能。更多还原

【Abstract】 Effect of heat treatment on microstructure, hardness and wear behavior of H11 steel were systematically studied by means of microstructure analysis, vickers hardness test, friction and wear behavior test and worn surface observation. The experimental results show that the heat treatment process has a significant role on the microstructure, Vickers hardness and wear behavior of H11 steel.Compared with the H11 steel quenched at 1,000℃ and tempered at 580℃, the Vickers hardness of H11 steel quenched at 1,000℃ + 580℃ secondary tempering treatment is still maintained at a high level, its value is 468HV, and its microstructure is composed of tempered martensite and dispersed carbide. After quenching at 1,000℃ and tempering at 580℃ for two times, the friction coefficient of H11 steel is ～0.6, and the wear volume is minimal, showing excellent friction and wear properties.更多还原