Abstract
A mean-field approach, considering the number of neighbor bonds at a grain boundary, alloy effects, a surface tension term and a size effect, is applied to the grain boundary segregation at FCC [001] twist boundaries in a Pt-1 at.%Au, a Pt-1 at.%Ni, a Ni-1 at.%Pt, a Ni-1 at.%Cu and a Cu-1 at.%Ni alloy at 1000 K. The validity of the present model was tested by comparing with the Monte Carlo simulations utilizing embedded atom method (EAM) potentials. The agreement between the results from the present model and the simulation is fairly good
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