Evolution of microstructure and tensile properties of in situ titanium matrix composites with volume fraction of (TiBÂ +Â TiC) reinforcements

► Microstructure and tensile properties are investigated systematically. ► The TiB and TiC tended to segregate at prior β grain boundaries. ► The prior β grain size and α lath width are significantly refined. ► Microstructural refinement donminates the strengthening contribution.