Evolution of hot rolling textures in a two-phase ( α2+ β) Ti 3Al base alloy

Abstract

Texture development during thermomechanical processing of two-phase ( α 2+ β) Ti–24Al–11Nb alloy was studied as a function of variables like initial microstructure, rolling temperature, cooling conditions, etc. The evolution of texture in different conditions has been critically analysed. It has been found that unrestricted rolling of primary α 2 at lower temperature leads to a good basal {0001}〈 uvtw〉 texture, while at higher temperatures, the α 2→ β→ α 2 phase transformation leads to weakening of the basal texture. Texture of secondary α 2 derived from rolled β is generally non-basal. However, the texture of secondary α 2 derived from recrystallized β has a basal character.