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Stress relaxation of bulk and ribbon glassy Pd40Cu30Ni10P20

Authors
Journal
Scripta Materialia
1359-6462
Publisher
Elsevier
Publication Date
Volume
54
Issue
3
Identifiers
DOI: 10.1016/j.scriptamat.2005.09.056
Keywords
  • Metallic Glasses
  • Structural Relaxation
  • Plastic Deformation
  • Stress Relaxation

Abstract

Abstract Detailed measurements of linear heating and isothermal stress relaxation of bulk and ribbon glassy Pd 40Cu 30Ni 10P 20 below the glass transition temperature have been performed. Using the activation energy spectrum reconstructed from these measurements, the temperature dependence of the shear viscosity has been calculated. It has been found that this dependence agrees with that derived directly from the creep measurements. This provides strong support for understanding the stress relaxation as a result of the stress-oriented irreversible structural relaxation with distributed activation energies.

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