The growth of impurity atmospheres round dislocations

Abstract

Computations are presented for the analytic perturbation solution for the growth of a Maxwellian impurity atmosphere round a dislocation. The kinetics of growth of these atmospheres are related to the various physical processes involved. A direct numerical technique is then described for the case when the interaction potential is large and the perturbation approach is not permissible. The direct numerical results are similarly interpreted and related where possible to the analytic results. It is concluded that the simple formation of atmospheres round dislocations cannot explain all the observations associated with the phenomenon of strain ageing.