Abstract
Dislocation damping as a function of strain amplitude following quenching and during 1-MeV electron irradiation was investigated by measuring Young’s modulus and the logarithmic decrement in high-purity polycrystalline copper. A ’’peaking effect,’’ an initial increase and subsequent decrease in the damping, was observed at all strain amplitudes during electron irradiation. A somewhat subdued peaking effect was observed only at high strain amplitudes following quenching.
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