Modelling the Evolution in Microchemistry and its Effects on the Softening Behavior of Cold Rolled AlFeMnSi-Alloys during Annealing

Abstract

A dedicated diffusion controlled precipitation model for AlMnFeSi-alloys, based on classical nucleation and growth theory, has been implemented and coupled to a phenomenological softening model accounting for the combined effect of recovery and recrystallization during annealing after cold rolling. The result is a fully coupled precipitation and softening model which in principle is capable of accounting for variations in solute levels and size and volume fraction of dispersoids and their interaction with the softening behavior during annealing.

The influence of microchemistry on the softening behaviour of two cold-rolled Al–Mn–Fe–Si alloys

“…The as-received materials for both model alloys were in as-cast state, with the chemical compositions given in Table 1..Both materials consist of grains of equiaxed shape with average grain size of ~140 µm, and constituent particles are mostly located at the grain boundaries and in interdendritic regions. These two model alloys are designated as C1 and C2 respectively, to make it consistent with other related investigations [30][31][32][33][34].…”