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通过动载荷冲击磨料磨损试验及磨损后磨面硬度测量,运用扫描电子显微镜SEM和透射电镜(TEM)观察磨损表面形貌和磨损亚表层组织,研究了超高锰钢的耐磨性和冲击磨料磨损行为。研究结果表明,磨损60min时,低冲击功磨料磨损条件下,改性高耐磨锰钢的耐磨性比ZGMn13钢有显著提高,磨面硬度随着时间的延长而缓慢增加。而高冲击功时的耐磨性是ZGMn13钢的1.5倍,磨面硬度在短时间内达到HB440左右。其磨损亚表层的TEM组织主要由高密度位错、变形带组成,且微晶与非晶镶嵌分布。依据实际工况条件,加工硬化和冲击韧性适当配合的超高锰钢耐磨性良好。
The wear surface morphology and wear subsurface structure were observed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), and the wear resistance and impact abrasion of ultra-high manganese steel were studied by dynamic load impact abrasion test and wear surface hardness measurement. Wear behavior. The results show that the wear resistance of modified high wear-resistant manganese steel is significantly higher than that of ZGMn13 steel under low impact impact abrasion, and the wear hardness increases slowly with time. The wear resistance of high impact work is 1.5 times ZGMn13 steel, grinding hardness in a short period of time to reach about HB440. The microstructure of the worn sub-surface TEM consists mainly of high-density dislocations and deformation bands, and the microcrystalline and amorphous inlaid distribution. According to the actual working conditions, work-hardening and impact toughness of the appropriate combination of ultra-high manganese steel wear resistance.