脉冲磁场对高速钢刀具材料摩擦磨损性能的影响

研究了脉冲磁场处理对高速钢（HSS）刀具材料W9Mo3Cr4V的摩擦磨损机制。通过进行HSS材料脉冲磁化摩擦试验，对不同的脉冲磁场强度、磁场频率和磁化时间条件下，HSS材料磨损率、摩擦系数以及表面形貌进行了检测。结果表明：脉冲磁场能够使得HSS材料的耐磨性明显提高，摩擦系数降低，且其摩擦表面形貌较平坦；特别是在一定的脉冲磁场参数下，HSS磁化处理效果较好，摩擦系数小且耐磨性好。脉冲磁化处理前后材料微观组织对比分析显示：脉冲磁化处理后，材料内部析出大量弥散碳化物，弥散强化是脉冲磁化处理增强材料耐磨性的主要机理。

The Effect of Pulsed Magnetic Field on Friction and Wear Properties of High Speed Steel Tool Materials

The effect of pulsed magnetic field on the friction and wear mechanisms of high speed steel （HSS） cutting tool material W9Mo3Cr4V is investigated. The wear rate, friction coefficient and surface morphology of HSS material are detected under the different conditions of magnetic field strength, frequency and magnetization time in the pulse magnetization friction experiments. The experimental results show that the pulse magnetization treatment results in the improved wear resistance of HSS, the reduced friction coefficient, and the flat friction surface topography. Especially in certain parameters of pulsed magnetic field, the effect of HSS magnetization treatment is better with a lower coefficient of friction and better wear resistance. The comparative analysis of microstructures before and after magnetization treatment shows that a large number of dispersed carbides in the material are separated out after magnetization treatment. Dispersion strengthening is the main mechanism of pulsed magnetization treatment to enhance the wear resistance of the material.