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    郑怡, 刘明, 向阳开. 40Cr钢和16Mn钢的室温单轴应变循环特性[J]. 机械工程材料, 2009, 33(1): 8-9.
    引用本文: 郑怡, 刘明, 向阳开. 40Cr钢和16Mn钢的室温单轴应变循环特性[J]. 机械工程材料, 2009, 33(1): 8-9.
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    ZHENG Yi, LIU Ming, XIANG Yang-kai. Uniaxial Strain Cyclic Behaviors of 40Cr and 16Mn Steels at Room Temperature[J]. Materials and Mechanical Engineering, 2009, 33(1): 8-9.
    Citation: ZHENG Yi, LIU Ming, XIANG Yang-kai. Uniaxial Strain Cyclic Behaviors of 40Cr and 16Mn Steels at Room Temperature[J]. Materials and Mechanical Engineering, 2009, 33(1): 8-9.
    shu

    40Cr钢和16Mn钢的室温单轴应变循环特性

    Uniaxial Strain Cyclic Behaviors of 40Cr and 16Mn Steels at Room Temperature

      摘要
    • 摘要: 对40Cr钢和16Mn钢进行了室温单轴应变循环试验,对比了两种钢的循环特性,讨论了应变幅值和平均应变以及二者的历史对应变循环特性的影响.结果表明:两种钢在应变循环加载条件下均有循环软化的特征,并且先前较大的应变幅值循环加大了后继较小的应变幅值的循环软化效应,但前者抑制了后者的循环软化率;当平均应变较小时,材料处于强化阶段;反之,材料处于屈服平台或稳定塑性流动状态.

       

      Abstract: Uniaxial strain cycling test was carried out on 40Cr and 16Mn steels at room temperature and the cyclic characteristics of the two steel were compared.The effects of cyclic strain amplitude,mean strain and their loading histories on the strain cyclic characteristics were studied.The results showed that the two steels both had cyclic softening feature.A previous larger cyclic strain amplitude enlarged the cyclic softening effect of the latter smaller cyclic strain amplitude,but the former restrained the cyclic softening rate of the latter.The steels were in strengthening stage when the mean strain was smaller,and the materials were in yield stable plastic flowing stage when the mean strain was larger.

       

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