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本文研究了不同锰、碳、铬含量,孕育处理,水韧处理和时效硬化处理对奥氏体锰钢显微组织和机械性能的影响,着重探讨了在非强烈冲击情况下奥氏体锰钢的加工硬化能力、抗变形能力和耐磨性.试验结果表明:Mn7Cr2和Mn9Cr2两种奥氏体锰钢的冲击值分别为8～1O公斤力·米/厘米~2和13～14公斤力·米/厘米~2;与Mn13钢相比,在非强烈冲击情况下的加工硬化率提高20～30%以上,原始硬度HB提高40～60个单位,屈服强度提高15kgf/mm~2以上.在非强烈冲击工况下,Mn7Cr2和IMn9Cr2钢的使用寿命高于Mn13钢.
In this paper, the effects of different contents of manganese, carbon, chromium, inoculation, water toughening and age hardening on the microstructure and mechanical properties of austenitic manganese steel were studied. The effects of austenitic manganese steel The results show that the impact values of two kinds of austenitic manganese steel, Mn7Cr2 and Mn9Cr2, are 8 ~ 10kg · m / cm ~ 2 and 13 ~ 14kg · · M / cm ~ 2; Compared with Mn13 steel, the work hardening rate under non-severe impact conditions is increased by 20-30%, the original hardness HB is increased by 40-60 units, and the yield strength is increased by 15kgf / mm ~ 2. Under non-severe impact conditions, the service life of Mn7Cr2 and IMn9Cr2 steels is higher than that of Mn13 steels.