from the conferences organized by TANGER Ltd.
Among titanium-based alloys, Ti-6Al-4V is the most extensively utilized material for structural applications due to its exceptional strength-to-weight ratio, outstanding corrosion resistance, and excellent biocompatibility. It has been widely processed via laser powder bed fusion (L-PBF), a leading additive manufacturing technique that allows for the fabrication of near-net-shape components, offering substantial cost and material savings. The processing parameters employed in L-PBF critically influence the resulting microstructure, defect formation, and mechanical performance of the alloy. This study focuses on the microstructural features and relative density of Ti-6Al-4V components manufactured under varying energy densities. The findings reveal that defect generation is highly sensitive to the applied energy density, with a marked effect on key mechanical properties, especially ductility. Furthermore, the results indicate that higher laser power can mitigate the sensitivity of other processing variables, enabling the production of high-quality parts at increased scanning speeds and reduced build times. A detailed analysis of individual process parameters is presented, along with an evaluation of the effects of hot isostatic pressing (HIP) and post-process heat treatments on the evolution of the microstructure and the enhancement of mechanical properties.
Keywords: Powder bed fusion, Ti6Al4V alloy, energy density, heat treatment, hot isostatic pressing© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.