Structure and properties of metastable metal-matrix composites produced by 'bottom-up' processing of core-shell powders

Abstract

Model metastable metal-matrix composites (m-MMCs) will be prepared by bottom-up technique of spark-plasma-sintering of core-shell Cu@Ag, W@Ag and W@Cu@Ag powders, which enable to preserve the spherical form of the reinforcing particles as well as their nature as pure metals. m-MMCs with soft and hard spherical particles, as well as those reinforced by core-shell particles W@Cu, all with defined size and distribution, will be characterized by advanced multiscale techniques and deformed in various way including severe plastic deformation. Obtained results together with theoretical modeling enable to elucidate the relationship between microstructure and mechanical properties, and mechanisms of plastic deformation on submicroscopic level.