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Thermal expansion of bulk amorphous Zr41.2Ti13.8Cu12.5Ni10Be22.5 alloy

Published online by Cambridge University Press:  31 January 2011

Y. He ,
R. B. Schwarz  and
D. G. Mandrus
Y. He
Affiliation:
Center for Materials Science, MS K-765, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
R. B. Schwarz
Affiliation:
Center for Materials Science, MS K-765, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
D. G. Mandrus
Affiliation:
Center for Materials Science, MS K-765, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
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Abstract

The linear thermal expansion of the bulk amorphous Zr4.12Ti13.8Cu12 5Ni10Be22.5 (atomic percent) alloy has been measured from 80 K to 773 K. The data for T, Tg were fitted by a model based on the Grüneisen relation and a Debye expression for the heat capacity. From the fit, we deduced the Grüneisen parameter, g = 1.25, and the Debye temperature, QD = 400 K. Annealing the amorphous alloy at 663 K, which is between the glass transition temperature Tg = 623 K and the crystallization temperature Tx = 693 K, causes viscous flow in the sample. This is due to the small viscosity in the undercooled liquid.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 7 , July 1996 , pp. 1836 - 1841
Copyright
Copyright © Materials Research Society 1996

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