Microstructural characterization and mechanical properties of nano-scale/sub-micron TiB-reinforced titanium matrix composites fabricated by laser powder bed fusion

A B4C/Ti-6Al-4V(Ti64) composite powder containing a minor B4C content (0.2 wt%) was developed by a novel technique and was subjected to the laser powder bed fusion (L-PBF) process within a wide range of laser powers and scanning speeds to fabricate titanium matrix composite (TMC) parts. The relative density measurement results revealed the achievement of almost fully dense TMC parts. Compared to the Ti64 case, slightly higher E v values were …