Strength Properties of Metal–Intermetallic Laminated Composites in Three-Dimensional Model

Resumo

The paper studies the instability of the plastic flow and fracture of metal-intermetallic laminated composites using a three-dimensional multi-scale model of the dislocation kinetics and mechanics of the elastoplastic medium under the dynamic high-temperature compression. The suggested theoretical stress-strain curves represent the behavior of laminated composites at different deformation temperatures and layer arrangements. It is shown that the inclusion of soft plastic metallic layers into the intermetallic matrix stabilizes the plastic flow of laminated composites, significantly increases the plasticity and time to fracture and decreases the deformation resistance. The layer arrangement has no great effect on the stability of plastic deformation.