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A model is proposed to describe, the kinetics of solute segregation to partial dislocations in solid solutions of cold-rolled alloys. The case for half-edge and half-screw dislocations is considered. The model gives account of the kinetic behaviour observed in a deformed Cu-5 at. % Mn alloy where two unknown processes were assessed during calorimetric isothermal experiments. The faster process corresponds to segregation to screw dissociated dislocations while the slower one corresponds to segregation to edge dissociated dislocations. Effective activation energies, larger for edge dislocations, are close to that for pipe diffusion along the partials corrected by pinner binding energy terms. It is also predicted that segregation occurs faster as the dislocation density is increased.

Cinética de segregación de soluto a las dislocaciones parciales en Cu-5 % at. Mn