氧化铝粒子的冲蚀速度对高锰钢磨损特性影响的研究

Study on Effect of Impacting Velocity of Alundum Particle to Erosion Behaviors of High Manganese Steel

通过对高锰钢的磨损表面形貌、磨屑形貌和表面硬度的分析，研究了氧化铝粒子的冲蚀速度对高锰钢的磨损特性的影响．结果表明：在氧化铝粒子不同速度的冲蚀下，高锰钢仍具有典型延性材料的冲蚀磨损特性．高锰钢的磨损过程分为两个阶段：初始阶段和稳定阶段．同一速度下初始阶段的磨损率高于稳定阶段的磨损率．随氧化铝粒子冲蚀速度的提高，在高锰钢的冲蚀磨损过程中出现稳定阶段所对应的粒子质量逐渐减少，初始阶段和稳定阶段的磨损率都增加，表面硬化层的厚度和应变诱发马氏体的分数有所增加．

In this paper, erosion behaviors of high manganese steel under different impacting velocities of alundum particles have been investigated by erosion surface morphology, debris morphology and hardness of subcrust analysis. The results show that high manganese steel has typical erosion behaviors of ductile metals under different impacting velocities of alundum particles. Erosion process divides into initial stage and steady stage. Erosion rate of initial stage is higher than that of steady stage under the same impacting velocity. The increase of impacting velocity of alundum particles can gradually reduce particle weight of appearing steady stage, increase erosion rate of initial stage and steady stage, and increase thickness of casehardening layer and fraction of strain induced martensite effect in impacting process of high manganese steel.