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    于慧臣, 张仕朝, 李影. 不同温度下16Cr3NiWMoVNbE结构钢的低周疲劳行为[J]. 机械工程材料, 2014, 38(2): 44-47.
    引用本文: 于慧臣, 张仕朝, 李影. 不同温度下16Cr3NiWMoVNbE结构钢的低周疲劳行为[J]. 机械工程材料, 2014, 38(2): 44-47.
    shu
    YU Hui-chen, ZHANG Shi-chao, LI Ying. Low Cycle Fatigue Behaviors of Structural Steel 16Cr3NiWMoVNbE at Different Temperatures[J]. Materials and Mechanical Engineering, 2014, 38(2): 44-47.
    Citation: YU Hui-chen, ZHANG Shi-chao, LI Ying. Low Cycle Fatigue Behaviors of Structural Steel 16Cr3NiWMoVNbE at Different Temperatures[J]. Materials and Mechanical Engineering, 2014, 38(2): 44-47.
    shu

    不同温度下16Cr3NiWMoVNbE结构钢的低周疲劳行为

    Low Cycle Fatigue Behaviors of Structural Steel 16Cr3NiWMoVNbE at Different Temperatures

      摘要
    • 摘要: 对16Cr3NiWMoVNbE结构钢在25,100,200,300,350 ℃下进行了应变比为-1的总应变控制的低周疲劳(LCF)试验, 研究了不同温度下该结构钢的循环应力响应、疲劳寿命和循环应力-应变行为。结果表明: 试验钢在温度不高于200 ℃时, 表现出循环软化的现象, 而在300 ℃时, 表现出明显的循环硬化现象; 随着温度的升高, 疲劳寿命有下降的趋势, 利用三参数幂函数公式能较好地表征不同温度下的应变-寿命关系。

       

      Abstract: The total strain-controlled low cycle fatigue(LCF) tests at strain ratio of -1 were performed on a structural steel 16Cr3NiWMoVNbE at 25, 100, 200, 300, 350 ℃. The cyclic stress response, fatigue life and cyclic stress-strain behaviors of 16Cr3NiWMoVNbE steel at different temperatures were investigated. The results indicate that the steel represented cyclic softening at the temperature no higher than 200 ℃ and cyclic hardening while the temperature was 300 ℃. When the temperature rose, the fatigue life shortened. The relationship between strain and life can be described well by three-parameter power function at different temperatures.

       

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