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- W4226451423 endingPage "106682" @default.
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- W4226451423 abstract "• The overaged samples have the lowest tensile strength among the three aging states, but their fatigue strength is the highest. • Planar slip dislocations are less likely to annihilate by cross slip at the UA state, thus contributing to better work-hardening ability, resulting in better strength and plasticity. • Wave slip dislocations at the OA state are frequently annihilated on the second phase, so that the number of dislocations reaching and gathering at GBs is relatively low, which reduces the damage at GBs. The high-cycle fatigue (HCF) behaviors of wrought Al alloys are vitally important for their industrial application. To optimize the fatigue property of the wrought Al alloy, the effects of aging conditions on the fatigue properties of 7N01, 7075 and 2024 Al alloys were studied. The results show that the overaged samples have the lowest tensile strength among the three aging states, but their fatigue strength is the highest. Further investigations on the dislocation morphologies indicates that the dislocations are easy to accumulate and annihilate at the second phase boundaries for the overaged state, which reduces the fatigue damage degree at the grain boundaries. Besides, the discontinuous distribution of the grain boundary precipitates and the increased width of the precipitate-free zone also contributed to the improved fatigue property of the overaged state. Those results should be significantly important for the optimization of their fatigue properties and the industrial application of wrought Al alloys." @default.
- W4226451423 created "2022-05-05" @default.
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- W4226451423 date "2022-03-01" @default.
- W4226451423 modified "2023-10-18" @default.
- W4226451423 title "Effect of aging state on fatigue property of wrought aluminum alloys" @default.
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- W4226451423 doi "https://doi.org/10.1016/j.ijfatigue.2021.106682" @default.
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