The interaction of point defects with dislocations in high purity copper above room temperature. I. Electron irradiation

Damping and modulus measurements were made on high-purity, : olycrystalline copper during and following 1.0 MeV electron irradiations in the temperature range, 37–500°C. Above a critical temperature (225°C) the pinning rate decreases. An analysis of the pinning rate data gave a value of 0.25 eV for the binding energy of a vacancy to a dislocation. An initial increase in the decrement, at the onset of irradiation, was observed at temperatures as high as 375°C.