METAL-MATRIX COMPOSITE PRODUCTION BY SYNTHESIS OF SEMISOLID MIXTURES

The metal matrix composites (MMCs) consist of a metallic matrix and a reinforcing phase, which can take one of several morphologies includin g continuous or discontinuous fibres, whiskers particulates. Although many different technologies of MMCs production have been developed to date, there are still a lot of problems, which have to be solved in be tter way. Especially critical are wettability, adhesion and chemical b onding at the interface matrix-reinforcing phase and attainable reinfo rcing fraction. In this paper a model of production technique ''Synthe sis of semisolid mixtures'', for fabrication of particle reinforced MM Cs in presented. The proposed processing route solves both, the proble m of wettability as well as the problem of the reinforcing phase fract ion variation in the composite.