Stability of rolling texture during heat treatment in a two-phase Ti3Al base intermetallic alloy

The stability of hot rolling texture developed in the alpha(2) phase of a t wo-phase Ti3Al base intermetallic alloy, during subsequent heat treatment, has been systematically investigated. The basal hot rolling texture remains rather stable during recrystallization annealing at temperatures within th e single phase alpha(2) range. Grain growth after recrystallization produce s extra orientations other than the basal. For the material with a starting basal texture, heat treatment in the upper alpha(2), (alpha(2) + beta) or beta phase fields does not change the basic character of the texture, altho ugh the sharpness and especially the width of the basal component increase to some extent with the increase in the heat treatment temperature. Heat tr eatment of material with starting non-basal texture in the upper alpha(2), (alpha(2) + beta) or beta phase fields does not produce any basal component irrespective of the heat treatment temperature. When the starting material is reasonably strain free and possesses a weak basal texture, heat treatme nt in the upper alpha(2),(alpha(2) + beta) or beta phase fields helps in in tensifying the basal component to a certain extent. (C) 1999 Acta Metallurg ica Inc. Published by Elsevier Science Ltd. All Rights reserved.