EFFECT OF ELASTIC DEFORMATION OF FCC METALS CRYSTAL LATTICE ON THE ENERGY OF THE BINDING AND MIGRATION OF IMPURITY ATOMS OF LIGHT ELEMENTS
The effect of elastic deformation of Ni, Ag and Al crystal lattice on the energy of the binding and migration of impurity atoms C, N and O is studied by the molecular dynamics method. According to the results obtained, the elastic deformation has almost no effect on the binding energy of the impurity atom. A weak decrease in the energy occurs only at tension of the crystal. The effect of deformation on migration energy is more explicit. When Ni and Ag are stretched, the migration energy of impurity atoms C, N, O monotonously decreases. However, for Al the picture is the opposite: during the tension the migration energy of impurity atoms in Al increases. Herewith, compression in the case of Al has a relatively larger effect on the migration energy than the tension.