A precipitation-hardening model for non-isothermal ageing of Al–Mg–Si alloys

An age-hardening model has been developed to predict the evolution of the hardness of Al–Mg–Si alloys during non-isothermal ageing before peak age. The concurrent precipitation and dissolution have been considered in the structural model. Then the structural model has been combined with strengthening model to predict the precipitation-hardening behavior of the alloy AA6061. The results indicate that the developed model can be used as a predictive tool to model the mechanical properties evolution of Al–Mg–Si alloys during non-isothermal heat treatment.