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Resonant vibration analysis for temperature dependence of elastic properties of bulk metallic glass

Published online by Cambridge University Press:  03 March 2011

Sven Bossuyt*
Affiliation:
Department of Mechanics of Materials and Constructions, Vrije Universiteit Brussel (VUB), B-1050 Brussels, Belgium
Sixto Giménez
Affiliation:
Department of Metallurgy and Materials Engineering (MTM), Katholieke Universiteit Leuven, B-3001 Heverlee, Belgium
Jan Schroers
Affiliation:
Liquidmetal Technologies, Lake Forest, California 92630
*
a) Address all correspondence to this author. e-mail: sven.bossuyt@vub.ac.be
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Abstract

The variation of a Zr57Nb5Cu15Ni13Al10 bulk metallic glass’s elastic constants with temperature and thermal history was investigated, using an impulse excitation technique for resonant vibration analysis. The Young’s modulus at 550 K is 78 GPa with a slope of −17 MPa/K in the glass as-produced and increases to 80 GPa with a slope of −26 MPa/K upon annealing. The modulus of the supercooled liquid at 700 K is 74 GPa with a slope of −90 MPa/K, whereas for the crystallized material E = 100 GPa with a slope of −15 MPa/K. These results are interpreted in terms of the vibrational and configurational contributions to the temperature dependence and compared with calorimetry data.

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Copyright
Copyright © Materials Research Society 2007

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