Mo和变质处理对高钒高速钢耐磨性的影响

为讨论Mo元素和变质处理对高钒高速钢耐磨性的影响,制备高钒钼高速钢.通过金相法、X射线衍射和摩擦磨损实验对高钒高速钢的显微组织、物相组成和耐磨性能进行分析.结果表明：热处理后的未变质高钒高速钢、变质高钒高速钢和变质高钒钼高速钢的组织主要由马氏体、Fe3C和V2C组成;Mo元素和变质处理使高钒高速钢的碳化物明显细化,大量颗粒状碳化物弥散分布;变质高钒钼高速钢在室温下干磨损60 min,失重量为0.0119 g.该研究为高钒高速钢的发展提供了理论依据.

Effect of molybdenum and modification treatment on wear behaviors of high vanadium high speed steel

This paper is concerned specifically with the preparation of high vanadium high speed steel as part of response to the effect of element Mo and modification treatment on the wear resistance of high vanadium high speed steel.The paper goes further into an analysis of the microstructure,phase composition,and wear resistant performance using metallography,X ray diffraction and friction,and wear experiments.The test results show that after the heat treatment,the unmodified high vanadium high speed steel,metamorphic high vanadium high speed steel,and metamorphic high vanadium molybdenum high speed steel,have the microstructure composed mainly of martensite,Fe3C and V2C; Mo element and modification treatment gives an obvious thinning to the carbide of high vanadium high speed steel,and a diffuse distribution of a large number of star-shaped carbide; after subjected to 60-min-dry wear at room temperature,metamorphic high vanadium molybdenum high speed steel has the wear volume of only 0.0119 g.This study may provide a theoretical basis for the development of high vanadium high speed steel.