Effect of Impact Energy on the Microstructure and Wear Properties of ZGMn18Cr2 High Manganese Steel

Author of the article:CHEN Shengqian, LIU Rangxian, WANG Bo, SUN Jiayao, LU Duanmin

Author's Workplace：Aviation Manufacturing College, Zhangjiajie Institute of Aeronautical Engineering, Zhangjiajie 427000, China

Key Words：high manganese steel; impact wear; wear mechanism

Abstract：Under the condition of stimulating real work circumstances, the structure, mechanical properties and impact wear resistance of ZGMn18Cr2 high manganese steel under different impacts were studied by means of metallographic and scanning electron microscopes. The results show that the slip band density of high manganese steel increases with increasing impact. The maximum hardness is 448, 478 and 545 HV, and the depth of the hardened layer is 0.19, 0.29 and 0.7 mm, respectively, which gradually improves the hardening effect. Under the circumstance of the stimulated condition, when the impact value reaches 3 J, the capacity of work hardening of high manganese steel takes full play, and the wear weightlessness reduces to the lowest value, with shorter cutter marks and more furrow on the surface. Meanwhile, the wear mechanism is mainly cutting and plastic abrasive wearing.