Microstructure Control of Titanium Weld by Addition of Boron

Abstract

Reinforcement of titanium by using titanium mono-boride is being applied to weld metal of Commercial Pure-titanium. In this presentation, the effect of re-hating for the boron-added weld metal is accessed by taking into account the multi-pass welding. The boron-added weld metal is re-heated and its microstructure change is in-situ observed by using High temperature Laser Scanning Confocal Microscopy (HSLCM). The formed microstructure is also analyzed in detail and compared with CP-titaniumand boron-added weld.