Abstract

Microstructure and phase composition in fusion zone, heat affected zone and base metal of Ti–6Al–4V samples, produced by Selective Laser Melting (SLM) and Electron Beam Free-Form Fabrication (EBF3) methods were studied. Metallographic analysis was performed to compare sizes of prior columnar β grains and acicular α′ phase formed in the weld of Ti–6Al–4V samples obtained by different additive manufacturing methods. X-ray diffraction analysis revealed a change of β phase volume fraction in the weld of 3D printing Ti–6Al–4V samples. Distribution of Vickers microhardness of weld joint cross section specimens was under study.Microstructure and phase composition in fusion zone, heat affected zone and base metal of Ti–6Al–4V samples, produced by Selective Laser Melting (SLM) and Electron Beam Free-Form Fabrication (EBF3) methods were studied. Metallographic analysis was performed to compare sizes of prior columnar β grains and acicular α′ phase formed in the weld of Ti–6Al–4V samples obtained by different additive manufacturing methods. X-ray diffraction analysis revealed a change of β phase volume fraction in the weld of 3D printing Ti–6Al–4V samples. Distribution of Vickers microhardness of weld joint cross section specimens was under study.

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