Study of texture and microtexture during β to α + β transformation in a Ti–5Ta–1.8Nb alloy

Abstract

This paper discusses the evolution of texture in a Ti–5Ta–1.8Nb alloy during the transformation of ‘deformed α + β → β → α + β’, characterized using X-ray diffraction and Electron Back Scattered Diffraction techniques. It exhibited a deformation texture of type—[1 0 −1 0]//axial direction (AD) for the wire, and a [0 0 0 2]//normal direction (ND) for the cold rolled sheet sample. On subsequent β-homogenization treatment and cooling, the initial deformation texture was replaced with a transformation texture of [1 1 −2 0]//ND for the sheet sample. The wire sample exhibited a transformation texture with (1 1 −2 2) aligned near to the wire cross-section. A deformation texture was found to be essential to introduce transformation texture.