Abstract
Measurements of the Zener relaxation in copper-gold alloys, both in single crystals and in polycrystalline specimens, are reported. The data has been taken at low (1 Hz), intermediate (70 Hz) and high (50kHz) frequencies. The temperature, orientation and concentration dependence, of both the relaxation strength and the relaxation time, have been studied in detail, for composition up to 25 at.% Au in Cu. Finally, the results are discussed in terms of current theories of anelastic effects produced by stress-induced ordering.
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