Abstract
Measurements of torque relaxation upon isochronal (= linear) heating of bulk and ribbon glassy Pd40Cu30Ni10P20 differing ∼104-fold in the production quenching rates have been performed. It has been found that torque relaxation in bulk samples is notably faster than that in the ribbons despite the fact that the former are denser. Preannealing at a temperature Ta strongly decreases the relaxation rate at all temperatures T ≤ Ta and shifts the relaxation curves towards higher temperatures similarly in bulk and ribbon samples. The relaxation law has been determined. It has been revealed that rapid quenching of thermally aged samples from the supercooled liquid state recovers the ability to plastic flow. (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
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