Abstract
Competition between plastic deformation and fracture processes in metal–graphene layered composites is theoretically described. In the framework of the suggested approach, plastic deformation and fracture processes controlling the flow stress/strength of a metal–graphene layered composite are the transfer of plastic deformation across a graphene interface and the nanocrack formation initiated by stress fields of lattice dislocations stopped near a graphene interface. With these processes theoretically described, we reveal strength characteristics of metal–graphene layered composites as functions of their key structural parameters, including the metallic layer thickness λ and graphene layer thickness h. The results of our theoretical examination are consistent with the corresponding experimental data (Kim et al 2013 Nat. Commun. 4 2114).
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