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
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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