Achieving homogeneity in a high-Fe β-Ti alloy laser-printed from blended elemental powders

Blended Elemental powders are an emerging alternative to pre-alloyed in metal additive manufacturing due the wider range of alloys producible with them and cost savings from not developing novel feedstock. In this study, situ alloying concurrent microstructure evolution during SLM investigated by performing on a BE Ti-185 powder while tracking surface temperatures via Infra-red imaging phase transforma- tion synchrotron X-ray Diffraction. We then performed post-mortem electron microscopy (Backscatter Electron imaging, Energy Dispersive Spectroscopy Backscatter Diffraction) further gain insight into development. show that although exothermic mixing aids melting process, laser results only mixture alloyed unmixed regions. Full thus consistent is achieved through thermal cycling heat-affected zone.