Volume 22 Issue 3
Mar.  2007
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WEI Da-sheng, YANG Xiao-guang, WANG Yan-rong, YU Hui-chen, SHI Duo-qi. Fatigue characteristics of FGH95PM superalloy under dwell condition and modeling for life prediction[J]. Journal of Aerospace Power, 2007, 22(3): 425-430.
Citation: WEI Da-sheng, YANG Xiao-guang, WANG Yan-rong, YU Hui-chen, SHI Duo-qi. Fatigue characteristics of FGH95PM superalloy under dwell condition and modeling for life prediction[J]. Journal of Aerospace Power, 2007, 22(3): 425-430.

Fatigue characteristics of FGH95PM superalloy under dwell condition and modeling for life prediction

  • Received Date: 2006-03-02
  • Rev Recd Date: 2006-06-26
  • Publish Date: 2007-03-28
  • This paper performs describes under different dwell conditions of FGH95 powder metallurgy superalloy at 650℃,and analyses its features of deformation and life distribution,and studies the obvious effect on life due to dwell.Then for improving the life modeling under dwell conditions,a modified factor of position-shape of hysteresis loop is presented,and a modified life equation as function of inelastic energy is established.Comparing with the predictive results of other life equations,the modified life equation has higher predictive precision,more compact form and clearer physical meaning.So life prediction of PM FGH95 under dwell conditions can be solved better.

     

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