Interactions between plastic deformation and precipitation in Aluminium alloys: A crystal plasticity model

This work presents a crystal plasticity model for dynamic precipitation in aluminium alloys. It takes into account both the influence of an evolving precipitate distribution on critical stress dislocation glide, and accelerating effect deformation kinetics. The precipitates behaviour is integrated constitutive law. kinetics modelled spatio-temporally using multi-class kinetic (KWN) incorporating through accelerated solute diffusion caused by production excess vacancies. applied to growth coarsening shearable pre-aged AA7075 alloy under at 150°C, which corresponds industrially relevant production. paper first explores tensile behaviour, showing that might be responsible gain uniform elongation respectively 2% strain 50 MPa case hand. development plastic heterogeneities discussed. demonstrates how spatial may develop during deformation, these correlate with heterogeneities. distributions obtained static or ageing are predicted compared each other, texture