Three‐Dimensional Morphological and Crystallographic Investigation of Lamellar Alpha and Retained Beta in a Near Alpha Titanium Alloy by Combination of Focused Ion Beam and Electron Backscattering Diffraction

Abstract

AbstractWe studied the three‐dimensional (3D) morphology and crystal orientation distribution of coarse primary α, fine second α lamellae, and retained β layers in a near α titanium alloy using a 3D microtomographic electron backscattering diffraction method (3D EBSD). The results demonstrate that primary α lamellae are more like a thick plate in 3D space. The second α lamellae have lower in‐grain (mis)orientation gradients than primary α. The retained β is a continuous network structure and contains many cavities for α lamellae embedding.