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

Vladimir V Popov; Mikhail L Lobanov; Stepan I Stepanov; Yuanshen Qi; Gary Muller-Kamskii; Elena N Popova; Alexander Katz-Demyanetz; Artemiy A Popov

doi:10.3390/ma14164473

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

Materials (Basel). 2021 Aug 10;14(16):4473. doi: 10.3390/ma14164473.

Authors

Vladimir V Popov¹, Mikhail L Lobanov², Stepan I Stepanov², Yuanshen Qi^{3

4}, Gary Muller-Kamskii^{1

2}, Elena N Popova⁵, Alexander Katz-Demyanetz¹, Artemiy A Popov²

Affiliations

¹ Israel Institute of Metals, Technion Research & Development Foundation, Haifa 3200003, Israel.
² Heat Treatment & Physics of Metals Department, Ural Federal University, 620002 Ekaterinburg, Russia.
³ Department of Materials Science and Engineering, Technion-Israel Institute of Technology, Haifa 3200003, Israel.
⁴ Department of Materials Science and Engineering, Guangdong Technion-Israel Institute of Technology, Shantou 515063, China.
⁵ M. N. Miheev Institute of Metal Physics, UB RAS, 18, S. Kovalevskaya Str., 620108 Ekaterinburg, Russia.

Abstract

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.

Keywords: EBSD; HIP; Ti-6Al-4V; electron beam melting; orientation relationship; powder recycling; texture inheritance.