Texture evolution and dynamic recrystallization in a beta titanium alloy during hot-rolling process

Abstract

Crystallographic texture evolution in a β-Titanium alloy (Ti–15Mo–3Al–2.7Nb–0.2Si) during hot-rolling process is investigated. The results reveal that the shear strain in the surface area leads to weakening of texture intensity, that in turn gives rise to formation of significant through-thickness texture gradients. It is observed that the dynamic recrystallization (DRX), during the hot-rolling, occurs and is accompanied with the other weakening of deformation texture. The mechanism of the formation and evolution of the DRX grains, revealed by EBSD analysis, suggests that the weakening of the texture is associated with the rotation of the DRX grains towards the preferred slip systems having large misorientations between themselves.