RESEARCH OF PECULIARITIES OF MECHANICAL DECOMPOSITION IN SYNTHESIS OF <i>IN-SITU</i> COMPOSITES BASED ON REFRACTORY METALS
The article describes the method of mechanical alloying as an alternative for obtaining high-temperature materials based on niobium, the obtaining of which by traditional methods (casting technologies) entails great difficulties. The evolution of the microstructure, phase and granulometric compositions of composite powders of the Nb-Si-Ti system at various stages of mechanical alloying is considered. The microstructure and phase composition of the in-situ composite of the Nb-Si-Ti system were studied. The hardness and density of samples with different content of technological impurity Fe are compared.