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本文主要研究了碳、锰含量及时效热处理,对奥氏体锰钢在非强烈:中击工况下加工硬化性能的影响,并对硬化机理进行了探讨。试验结果表明:含碳量提高,含锰量降低,时效热处理,可以提高奥氏体锰钢的加工硬化能力。在非强烈冲击下,稳定性高的奥氏体锰钢的加工硬化主要是位错作用的结果。而奥氏体稳定性低的奥氏体锰钢的加工硬化,主要是形变诱发马氏体与位错综合作用的结果。在非强烈冲击工况下,高碳中锰钢的加工硬化能力高于普通高锰钢,其使用寿命比普通高锰钢提高40～60％。
In this paper, the effects of carbon and manganese content and aging heat treatment on the work-hardening properties of austenitic manganese steel under non-intense and medium-impact conditions were studied. The hardening mechanism was also discussed. The experimental results show that the carbon content, manganese content decreased, aging heat treatment, can improve the work hardening of austenitic manganese steel. Under non-violent impact, work hardening of austenitic manganese steels with high stability is mainly the result of dislocation. The austenitic manganese steel with low austenite stability is mainly caused by the combination of deformation-induced martensite and dislocation. Under non-severe impact conditions, the work hardening ability of high-carbon medium-manganese steel is higher than that of ordinary high-manganese steel, and its service life is increased by 40-60% compared with that of ordinary high-manganese steel.