Achieving Higher Service Temperatures Using a Directed Energy Deposited Novel Titanium Alloy

High-temperature titanium alloys have become of central importance in applications such as aeroengines, where lightweighting, oxidation
resistance and thermal stability are essential. Conventional alloys like Ti-6Al2-Sn-4Zr-2Mo were designed considering conventional
manufacturing routes, such as hot working. These are not optimized for additive manufacturing (AM) processes, which generally introduce
complex thermal history onto the material, resulting in disadvantageous microstructures. The resultant mechanical properties often showcase
anisotropy or early failure compared to wrought equivalents. This study aims to develop a novel titanium alloy with improved high-temperature
performance, specifically tailored for directed energy deposition AM processes. Based on the reference alloy, systematic iterative
compositional changes were established. From this range of alloys, detailed microstructural and experimental mechanical characterization
was conducted. Small-scale high-temperature testing was used to validate the performance against the reference alloy. This poster aims to
present the development technology, key results and the potential for the novel alloy developed for AM.