中文摘要：

以热轧高锰钢M n13为材料，在M L D‐10动载磨料磨损试验机上研究了M n13钢板以石英砂为磨料时，不同冲击功条件下的冲击磨料磨损性能，利用XRD和SEM 分析了其组织转变及磨损机制．实验结果表明：M n13钢板冲击磨料磨损的磨损失重和磨损率随冲击功的增大而减小，加工硬化程度随冲击功的增大而提高，冲击磨损硬化层中马氏体转变量也随冲击功的增大而增加，马氏体转变是其发生加工硬化的主要原因．M n13钢板的磨损破坏形式主要表现为塑变堆积和凿削坑，局部存在犁削破坏，其磨损机制表现为多次塑变导致的疲劳断裂．

英文摘要：

Hot rolled high manganese steel of Mn13 was selected as the testing material in this paper . The impact abrasive wear properties of this steel under the different impact energies were studied in the ex‐perimental machine of dynamic load abrasion tester MLD‐10 .XRD and SEM were used to investigate the structural transformation and wear mechanism of Mn13 steel .The results showed that the wear loss and wear rate decrease obviously with the increasing of impact energy .Work hardening capacity and amount of martensite transformation in hardening layer of impact wear improved with the increase of impact energy . The main cause of work hardening was the martensite transformation .The wear failure forms of Mn13 steel plate were the plastic deformation accumulation and drilling holes .There existed some plowing fail‐ures in the local wear area .The wear mechanism was mainly dominated by the fatigue fracture due to plas‐tic deformation .