Texturing and Phase Evolution in Ti-6Al-4V: Effect of Electron Beam Melting Process, Powder Re-Using, and HIP Treatment

The research demonstrates microstructural changes and development of specific texture in Ti-6Al-4V specimens produced by electron beam melting (EBM) under different conditions. The effect of two factors, namely, raw material (powder) recycling and hot isostatic pressing (HIP), on the EBM produced samples structure and properties, has been explored. The as-printed and treated samples were investigated using electron backscattered diffraction (EBSD) analysis. Modification of mechanical properties after the EBM and HIP are explained by the EBSD data on microstructural phenomena and phase transformations. The work is devoted to assessing the possibility of reusing the residual titanium alloy powder for the manufacture of titanium components by the combination of EBM and HIP methods.

Automated summary

The study investigates microstructural changes and specific texture development in Ti-6Al-4V specimens produced by EBM under different conditions, and explores the effects of powder recycling and HIP on the structure and properties of the samples. EBSD analysis reveals microstructural phenomena and phase transformations in the as-printed and treated samples, explaining the modifications in mechanical properties after EBM and HIP. The research aims to assess the possibility of reusing residual titanium alloy powder for manufacturing titanium components using EBM and HIP methods.