Impact of heat treatments on quasi-static mechanical performance of Ti-6Al-4V processed by laser powder bed fusion

Ti-6Al-4V alloys processed by laser powder bed fusion (LPBF) primarily display a martensitic microstructure, making them strong yet brittle. To improve the quasi-static stress-strain response, tailored heat treatments are required. The current thesis focusses on the development of customized heat treatments, concomitant microstructural evolution and their impact on the quasi-static mechanical behaviour of the heat-treated material. Scale-bridging mechanical tests are performed to understand this behaviour and to provide guidelines for future Titanium alloy design tailored for rapid solidifcation processes.