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 abrasive wear behavior of new type medium manganese high strength martensite steels with 0.12% and 0.19% carbon content were determined by the pin-on-disc abrasion test and three-body impact abrasive test,and was contrasted with steels of Hardox450 and 21C.The wear properties of the specimens were evaluated by weight loss measurements.In order to evaluate the wear mechanism of different steels,the post-test characterization of the worn surfaces were performed using LOM,SEM and XRD.The results show that the wear resistance of new type medium manganese martensite steels is comparable with the wear resistant steels of Hardox450 and 21C.The wear weight lost of the studied steel tested both in pin-on-disc abrasion and three-body impact abrasion is approximately linearly proportional to its HV hardness,i.e.,the higher the hardness,the better wear resistance of steels.Due to the addition of medium-Mn,the new typed steel assumes the advantages not only the Mn-solid strengthening to improve the wear resistance ability but its hardenability could be obtained at all cooling rate,which make the steel has the potential to be produced in steel industry.
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