A self-consistent approach for modelling texture development of two-phase polycrystals: Application to titanium alloys

A large strain self-consistent viscoplastic model is proposed, developed and applied to a two-phase polycrystal. This model accounts For crystallographic textures and grain morphologies, as well as for the phase correlation, both in space and orientation. The basic formulation is shown and the case of lamellar (alpha + beta) Ti alloys in rolling is studied. In these alloys, the two phases exhibit specific morphologic and crystallographic correlations. The present study shows that the model leads to better texture predictions when all these correlations are accounted for. (C) 1997 Acta Metallurgica Inc.