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Structural Relaxation in Various Amorphous Metallic Alloys Studied via Direct Viscosity and Bend Stress Relaxation Measurements

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Glassy Metals

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Abstract

This book section is a continuation of those presented in Chap. 7, theoretical bend stress relaxation considerations with respect to their relation to the viscosity. The chapter provides additional experimental proof with the aid of viscosity and bend stress relaxation measurements on Pd77.5Cu6Si16.5, Аl25La50Ni25, and Al7.5Cu17.5Ni10Zr65 glassy alloys.

The FVM interpretation of the two kinds of experimental data is possible with practically one and the same set of FVM parameters. A new method for quantitative experimental separation of viscous flow caused plastic and anelastic deformations, respectively, is developed. It is shown that the relaxation of the anelastic deformation, both under isothermal and nonisothermal conditions, can be very well described by the empirical equation of Kohlrausch-Williams-Watts.

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Authors and Affiliations

  1. Institute of Metal Science, Equipment and Technologies “Acad. A. Balevski” with Hydroaerodynamics Centre, 67, Shipchenski prohod Str, 1574, Sofia, Bulgaria

    Krassimir Russew & Liljana Stojanova

Authors
  1. Krassimir Russew
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  2. Liljana Stojanova
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Correspondence to Krassimir Russew .

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Russew, K., Stojanova, L. (2016). Structural Relaxation in Various Amorphous Metallic Alloys Studied via Direct Viscosity and Bend Stress Relaxation Measurements. In: Glassy Metals. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-47882-0_8

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