A work-hardening model with 3 types of dislocation densities as internal variables was presented. The kinetic equation of state, used to calculate the flow stress, was extended so as to account for solution hardening by taking solute atoms into account as obstacles for the mobile dislocations. Thus, the model was able to describe the effects of alloy composition on the hardening behavior. Examples were presented on how the model could be used to calculate stress–strain curves for a range of temperatures, strain rates and compositions. Its application to through process modelling was shown. Owing to the use of dislocation densities as internal variables, the model delivers an output that could be directly used as input for subsequent modelling of recrystallization.

Dislocation Density Based Modeling of Work Hardening in the Context of Integrative Modeling of Aluminum Processing. M.Goerdeler, M.Crumbach, M.Schneider, G.Gottstein, L.Neumann, H.Aretz, R.Kopp: Materials Science and Engineering A, 2004, 387-389, 266-71