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利用销盘式磨料磨损试验和三体冲击磨料磨损试验研究碳质量分数分别为0.12%和0.19%新型中锰马氏体高强度钢的磨损行为,并与Hardox450钢和21C钢进行耐磨性能对比。用磨损失重量表征耐磨性能,利用LOM、SEM和XRD等设备研究材料磨料磨损机制。结果表明,新型中锰钢耐磨性能与Hardox450钢及21C钢相当。在销盘式磨料磨损试验和三体冲击磨料磨损试验中,马氏体高强钢的耐磨性能与材料的硬度呈线性关系,硬度越高,材料耐磨性越好。由于锰的添加,新型中锰钢的优点不仅在于具有锰的固溶强化特性提高耐磨性能,还在于该钢的淬透性几乎与该钢的冷却速度无关,因而该钢具有大规模工业生产的潜力。
The wear behavior of the new type of medium-manganese martensitic high-strength steel with carbon mass fraction of 0.12% and 0.19% respectively was studied by using pin-plate abrasive wear test and tristimulus abrasive wear test. The wear resistance was compared with Hardox 450 steel and 21C steel. Abrasion loss was used to characterize the wear resistance. The wear mechanism of the material was studied by LOM, SEM and XRD. The results show that the wear resistance of the new medium manganese steel is comparable to that of Hardox 450 steel and 21C steel. In the pin-plate abrasive wear test and the three-body impact abrasive wear test, the wear resistance of the martensite high-strength steel is linear with the material hardness. The higher the hardness, the better the wear resistance of the material. Due to the addition of manganese, the advantages of the new medium manganese steel lie not only in the solid solution strengthening properties with manganese, which improve the wear resistance but also in the fact that the hardenability of the steel is almost independent of the cooling speed of the steel and thus the steel has a large-scale industrial production potential.