Microstructural Evolution and Silicide Precipitation Behavior of (TiBw+TiCp)/ Titanium Matrix Composite During Multi-Directional Forging

In this study, (TiBw+TiCp)/ titanium matrix composite underwent multi-directional forging deformation to investigate the microstructure evolution and silicide precipitation behavior. The results shown that the microstructure is mainly composed of fragmented TiBw and TiCp, equiaxed α phases, and silicides after deformation. The accumulation of strain during hot deformation and the formation of high-density dislocations near the reinforcement induce and promote the precipitation of silicides. Silicides are mainly distributed in the reinforcement and grain boundaries of low nucleation energy.