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- W2052419401 abstract "Notch size effects on the high cycle fatigue (HCF) limit stress of Ni-base superalloy Udimet 720 were investigated on cylindrical specimens with three notch sizes of the same stress concentration factor Kt=2.74. The HCF limit stress corresponding to a life of 106 cycles was experimentally determined at a stress ratio of 0.1 and a frequency of 25 Hz at room temperature. The stresses were calculated using finite element analysis (FEA) and the specimens analyzed using scanning electron microscopy (SEM). Test results show that at the same Kt value, notch size can slightly affect the HCF limit stress of U720 when notch root plasticity occurs. FEA and SEM results reveal that the notch size effects are influenced by a complicated combination of the stress and plastic strain fields at the notch tip, the nominal stress, and the effects of prior plastic deformation on fatigue crack initiation." @default.
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- W2052419401 date "2003-09-01" @default.
- W2052419401 modified "2023-10-18" @default.
- W2052419401 title "Notch size effects on high cycle fatigue limit stress of Udimet 720" @default.
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- W2052419401 doi "https://doi.org/10.1016/s0921-5093(03)00218-1" @default.
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