A model which described the roles played by bound and unbound vacancies was proposed in order to predict defect decay and short-range ordering kinetics in quenched binary alloys during linear heating. The model was applied to the differential scanning calorimetry curves of Cu-5at%Zn, quenched from various temperatures. An expression for calculating the activation energy for the migration of solute-vacancy complexes was developed. This made use of differential scanning calorimetry data. A value of 89.12kJ/mol was deduced for the present alloy. The relative contributions of bound and unbound vacancies, to the effective activation energy for ordering (as affected by the quenching temperature), were assessed.

Non-Isothermal Short-Range Order Kinetics of Binary Alloys as Influenced by Solute-Vacancy Complexes. A.Varschavsky, E.Donoso: Journal of Thermal Analysis and Calorimetry, 2003, 73[1], 167-82