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- W4328102463 abstract "The fatigue performance of Al-7Zn-2Mg-1.5Cu alloy was investigated using strain-controlled low-cycle fatigue (LCF) tests at various low temperatures focusing on the effects of hysteresis energy on fatigue life and the analysis of corresponding parameters. The results show that the alloy exhibits different cyclic hardening ratio depended on the applied total strain amplitude. The cyclic hysteresis energy displays cyclic stabilization at different temperatures. The initiation of fatigue crack occurs on the surface of specimens and many fatigue striations can be found on fatigue crack propagation region. In addition, the hysteresis energy model can be used to evaluate fatigue life at different temperatures. Wherein, intrinsic fatigue toughness (W0) decreases obviously with the decrease of temperature, while damage transition exponent (β) increases slightly. Comparing with low temperature tensile test results, Wo is related to the static toughness and β has a relation with the yield strength ratio. The relationships between the dislocation configuration, fatigue crack propagation mode and two fatigue parameters are discussed from microscopic viewpoint." @default.
- W4328102463 created "2023-03-22" @default.
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- W4328102463 date "2023-06-01" @default.
- W4328102463 modified "2023-10-01" @default.
- W4328102463 title "Low-temperature fatigue behavior and damage analysis of Al-7Zn-2Mg-1.5Cu alloy based on hysteretic energy" @default.
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- W4328102463 doi "https://doi.org/10.1016/j.mtcomm.2023.105855" @default.
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