Abstract
This study presents a comprehensive comparison of various process parameters employed in Direct Energy Deposition (DED) using Laser Beam (LB) and Coaxial Wire (CW) techniques for Ti-6Al-4V (DED-LB/CW/Ti-6Al-4V). The main objective is to achieve flawless parts following a zero-defect strategy through the optimization of deposition conditions, focusing on the morphology of single beads and layers. These geometrical aspects are directly related to the resultant inter-run porosity and mechanical properties, thus specific criteria are stablished based on the aeronautical standard ASM 2175. Deposition processes were conducted within an inert atmosphere generated by a chamber filled with commercially pure argon. Additionally, supplementary insights are provided regarding laser-deposited Ti-6Al-4V coaxial wire in vacuum environment. Therefore, this work serves as a comprehensive investigation into optimizing DED-LB/CW parameters for Ti-6Al-4V deposition in an inert atmosphere under atmospheric pressure and vacuum for zero-defect Additive Manufacturing (AM) components.
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