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Isochronal shear stress relaxation and recovery of bulk and ribbon glassy Pd 40 Cu 30 Ni 10 P 20
Author(s) -
Nguyen N. T. N.,
Khonik S. V.,
Khonik V. A.
Publication year - 2009
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200824396
Subject(s) - ribbon , supercooling , relaxation (psychology) , materials science , quenching (fluorescence) , condensed matter physics , thermodynamics , stress relaxation , shear (geology) , analytical chemistry (journal) , glass transition , metallurgy , composite material , chemistry , creep , polymer , physics , optics , psychology , social psychology , chromatography , fluorescence
Measurements of torque relaxation upon isochronal (= linear) heating of bulk and ribbon glassy Pd 40 Cu 30 Ni 10 P 20 differing ∼10 4 ‐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 T a strongly decreases the relaxation rate at all temperatures T ≤ T a 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)