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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1987, Vol. 8 ›› Issue (5): 267-273.

• 论文 • Previous Articles     Next Articles

THE EFFECTS OF PRESTRESS ON LOW CYCLE FATIGUE AND FATIGUE CRACK GROWTH BEHAVIOURS FOR ALLOY GH33A

Liu Shaolun1, Xie Jizhou1, Liu Xiangsheng2   

  1. 1. Institute of Aeronautical Materials, Beijing;2. Institute of Aeronautical Engines
  • Received:1986-08-25 Revised:1900-01-01 Online:1987-05-25 Published:1987-05-25

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Abstract: The effects of tensile prestress on low-cycle fatigue and fatigue crack growth rates for Ni-base alloy GH33A used to turbine engine disks were investigated at 360℃. The experimental results show that the low-cycle fatigue crack initiation life Ni will be increased by prestressing treatment within the range of low-cycle fatigue life 104~ 5×104, but the effect of prestress on fatigue crack propagation life Np is not obvious,

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Total visits: 6658907 Today visits: 1341