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- W2380289256 abstract "The fatigue lives of Al-Cu-Mg based 2E12 aluminum alloy under 190 ℃,1 h and 190 ℃,46 h were measured.The fractographies and the characteristics of ageing precipitation were investigated using scanning electron microscopy and transmission electron microscopy,respectively.The results show that the fatigue cracks are initiated around the coarse secondary phases on the free surfaces of the specimens.After over-ageing treatment,the equilibrium S phases precipitate the reversible movement of dislocations and further intensify their piles-up on the grain boundaries.On the other hand,the presence of wider PFZs and needle-shaped S phases on grain boundaries accelerate the localized deformation within PFZs and fast cracking along the grain boundary S phases.Therefore,the fatigue properties of the overaged specimens are deteriorated compared with that of the under-ageing specimens." @default.
- W2380289256 created "2016-06-24" @default.
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- W2380289256 date "2008-01-01" @default.
- W2380289256 modified "2023-09-25" @default.
- W2380289256 title "Effect of ageing precipitation characteristics on fatigue fracture behavior of 2E12 aluminum alloy" @default.
- W2380289256 hasPublicationYear "2008" @default.
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