Strength properties of metal-intermetallic layered composites in a three-dimensional multilevel model
Instability of a plastic flow and fracture of layered composites of metal-intermetallic type under dynamic high-temperature compression are studied for a three-dimensional multilevel model combining dislocation kinetics and mechanics of an elastoplastic medium. The stress-strain curves of layered composites are obtained at different deformation temperatures and layer locations. It is shown that the inclusion of soft plastic metal layers in the intermetallic matrix stabilizes the plastic flow of the laminate, considerably increases the ductility and time before fracture, and decreases the deformation resistance. The location of layers has a weak effect on the stability of plastic deformation.