A quench and irradiation study of the vacancy parameters in alpha -Cu-30 at% Zn

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Abstract
Resistivity measurements were used to monitor the short-range ordering rates associated with equilibrium, quenched-in or irradiation-produced vacancies in an alpha -Cu-30 at.% Zn solid solution. The procedure by which the ordering kinetics are analysed is presented and discussed. The quench studies give activation energies of 0.64+or-0.05 eV, 1.03+or-0.05 eV and 1.59+or-0.05 eV for the migration and formation of single vacancies and the relevant self-diffusion, respectively. Radiation studies yielded a vacancy migration energy of 0.65 eV. Previous quenching work is reinterpreted in the light of these results and a consistent picture for the quench and irradiation-enhanced ordering effects is proposed.