Paper Title:
Mechanical Properties of an Amorphous or Partially Crystallized Zirconium Based Metallic Glass
  Abstract

The effect of partial crystallization on the mechanical properties of a Zr based bulk metallic glass (Vitreloy 1) is investigated. Viscoelastic properties are studied by mechanical spectroscopy in large frequency and temperature ranges, both below or above the glass transition temperature (Tg), whereas viscoplastic properties are investigated by compression tests . To study the interaction between crystallization and mechanical properties at high temperature, nanocomposites are produced thanks to appropriate heat treatments. Formation of nanocrystalline particles induces an increase of the storage elastic modulus, especially in the glass transition range, where this modulus is very low in the amorphous material. It also results in a decrease of the loss elastic modulus, corresponding to a decrease of the atomic mobility. Finally, partial crystallization induces very large hardening revealed by the compression tests but the hardening extent depends strongly on the applied strain rate.

  Info
Periodical
Materials Science Forum (Volumes 539-543)
Main Theme
Edited by
T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran
Pages
2036-2042
DOI
10.4028/www.scientific.net/MSF.539-543.2036
Citation
J. M. Pelletier, S. Gravier, J. J. Blandin, "Mechanical Properties of an Amorphous or Partially Crystallized Zirconium Based Metallic Glass", Materials Science Forum, Vols. 539-543, pp. 2036-2042, 2007
Online since
March 2007
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$32.00
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