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首页> 外文期刊>Materials at High Temperatures >Time-dependent ratcheting of 35CrMo structural steel at elevated temperature considering stress rates
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Time-dependent ratcheting of 35CrMo structural steel at elevated temperature considering stress rates

机译：考虑压力率的升高温度下35crmo结构钢的时间依赖性棘轮

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摘要

Cyclic uniaxial stress-controlled ratcheting behaviors of 35CrMo structural steel were investigated at 500 degrees C. The effects of stressing rates and stress amplitudes were discussed in detail. Results present that the accumulated ratcheting strain increases with the increment of stress amplitude, while decreases with the reduction of stress rate at elevated temperature. Moreover, the ratcheting evolution curves with increasing number of cycles are similar to traditional static creep curves, and can be mainly divided into three stages. Especially, the ratcheting strain rate during the steady stage can be easily obtained to estimate the ratcheting or shakedown behavior. Furthermore, the steady ratcheting strain rate significantly decreases with increasing the stressing rate when the stressing rate is relatively slow. However, when the applied stressing rate is greater than a critical value, such as sigma >= 25MPa/s for sigma = 200MPa and sigma >= 25MPa/s for sigma(max)=500MPa, the effect of stressing rate has little effect on the cyclic ratcheting strain rate.
机译：在500摄氏度下研究了35Crmo结构钢的循环单轴应力控制的棘轮行为。详细讨论了应力速率和应激幅度的影响。结果显示，累积的棘轮应变随压力幅度的增量而增加，同时随着温度升高而降低应力率的降低。此外，具有越来越多的循环次数的棘轮演化曲线与传统的静态蠕变曲线相似，并且可以主要分为三个阶段。特别地，可以容易地获得稳定阶段的棘轮应变速率以估计棘轮或升起的行为。此外，随着应力速率相对较慢时，稳定的棘轮应变速率显着降低。然而，当施加的应力速率大于临界值时，例如Sigma = 25MPa / s用于Sigma = 200MPa和Sigma> = 25MPa / s用于Sigma（MAX）= 500MPa，应力率的影响几乎没有影响循环棘轮应变率。

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  • 来源
    《Materials at High Temperatures》 |2017年第3期|共7页
  • 作者

    Wang Wei; Zheng Xiaotao; Yu Jiuyang; Lin Wei; Wang Chenggang; Xu Jianmin;

  • 作者单位

    Wuhan Inst Technol Sch Mech &

    Elect Engn Hubei Prov Key Lab Chem Equipment Intensificat &

    Wuhan Peoples R China;

    Wuhan Inst Technol Sch Mech &

    Elect Engn Hubei Prov Key Lab Chem Equipment Intensificat &

    Wuhan Peoples R China;

    Wuhan Inst Technol Sch Mech &

    Elect Engn Hubei Prov Key Lab Chem Equipment Intensificat &

    Wuhan Peoples R China;

    Wuhan Inst Technol Sch Mech &

    Elect Engn Hubei Prov Key Lab Chem Equipment Intensificat &

    Wuhan Peoples R China;

    Wuhan Inst Technol Sch Mech &

    Elect Engn Hubei Prov Key Lab Chem Equipment Intensificat &

    Wuhan Peoples R China;

    Wuhan Inst Technol Sch Mech &

    Elect Engn Hubei Prov Key Lab Chem Equipment Intensificat &

    Wuhan Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

    Ratcheting; time-dependent; stressing rate; shakedown; 35CrMo steel;

    机译：棘轮;时间依赖;压力率;Shakedown;35crmo钢铁;

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