MICROSTRUCTURE OF Ti ALLOY BASED COMPOSITE REINFORCED BY SiC FIBERS

The study of Ti alloy based composite reinforced by SiC fibers showed that SiC dendrites grew along the radial directions peprendicular to the tungsten core; many stacking faults and microtwins were formed within the dendrites; SiC fibers bond well to the matrix, and the amorphous interfacial layers between them have not been damaged during composition. In the course of composition SiC dendrites near the interfacial region dissolved and diffused into the amorphous layer and reacted with the Ti alloy matrix at high temperature, producing TiC and Ti5Si3 .