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Benjamin Decreus, Alexis Deschamps, Frédéric de Geuser and Christophe Sigli Influence of Natural Ageing and Deformation on Precipitation in an Al–Cu–Li Alloy Advanced Engineering Materials 15

Version of Record online: 24 JUN 2013 | DOI: 10.1002/adem.201300098

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The influence of natural ageing and plastic deformation on precipitation in an Al–3 wt% Cu–1 wt% Li–(Mg,Ag) alloy is investigated by small-angle X-ray scattering. When predeformation is applied before artificial ageing, regardless of natural ageing, the T1 phase precipitates rapidly, resulting in a strong hardening response. When no deformation is applied, the T1 phase precipitates more sluggishly and the strengthening response is lowered.

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