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Molecular dynamics simulations of the interface structure in binary AgCueutectic were performed by using the realistic EAM potential. In simulations,we examined such quantities as the time dependence of the total energy in theprocess of equilibration, the probability distributions, the compositionprofiles for the components, and the component diffusivities within theinterface zone. It is shown that the equilibrium in the solid state associatedwith the complete phase separation in binary eutectic is accompanied byformation of the steady disordered diffusion zone at the boundary of thecrystalline components. At higher temperatures, closer to the eutectic point,the increase in the width of the steady diffusion zone is observed. Theparticle diffusivities grow therewith to the numbers typical for the liquidphase. Above the eutectic point, the steady zone does not form, instead, thecomplete contact melting in the system occurs. The results of simulationsindicate that during the temperature increase the phenomenon of contact meltingis preceded by the similar process spatially localized in the vicinity of theinterface.

Computer simulations of the interface zone structure in binary eutectic