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Using large-scale nonequilibrium molecular dynamics simulations, we study the roles of interfaces and layer thickness in the response of experimentally observed Cu/Nb nanolayered composites to shock compression. We observe a critical layer thickness (<20nm) below which lattice dislocations nucleate preferentially from the Cu/Nb interfaces. Within this regime of interface dominance, samples with...
We utilize non-equilibrium molecular dynamics simulations to reveal the dislocation processes underlying the recently observed pronounced effect of bimetal interface structures on the plastic response of Cu/Nb nanolayered composites to shock compression. Critical shock pressures to nucleate and transmit dislocations across an atomically flat interface are shown to be substantially higher than those...
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