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CHEN Ji-zhi, WANG Jia-min, LIU Jun, SHU Xing-lou, WANG Wei-yang. An Investigation on Fatigue Behavior of 07Cr12NiMoVNb Heat-resistant Steel[J]. Development and Application of Materials, 2005, 20(2): 1-4,12. DOI: 10.19515/j.cnki.1003-1545.2005.02.001
Citation: CHEN Ji-zhi, WANG Jia-min, LIU Jun, SHU Xing-lou, WANG Wei-yang. An Investigation on Fatigue Behavior of 07Cr12NiMoVNb Heat-resistant Steel[J]. Development and Application of Materials, 2005, 20(2): 1-4,12. DOI: 10.19515/j.cnki.1003-1545.2005.02.001
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An Investigation on Fatigue Behavior of 07Cr12NiMoVNb Heat-resistant Steel

  • 1. Luoyang Ship Material Research Institute, Luoyang 471039, China;

  • 2. Naval Representative Office Resident at Wenzhou Area, Zhoushan 316000, China

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  • Received Date: June 14, 2004
  • Available Online: June 14, 2024
    Graphical Abstract
    • Abstract
  • Rotating-beam fatigue tests of 07Cr12NiMoVNb steel were carried out at room temperature and 550℃. The results indicated that the damage behavior of the steel samples with different grain size is similar. The relation between room temperature fatigue strength and ordinary tensile strength is in accordance to ojuger's experiential formula. High-temperature fatigue strength is related to ordinary tensile strength, but the linear coefficient is different from that of room temperature fatigue. Grain size has less influence on fatigue strength at room temperature. Yet at 550℃, the steel with fine grain exhibits higher fatigue strength which is contrary to creep behavior. For creep behavior, the steel with roase grain exhibits higher strength.
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