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Glass formation, thermal properties, and elastic constants of La–Al–Co alloys

Published online by Cambridge University Press:  31 January 2011

Jin Man Park
Affiliation:
Institute for Complex Materials, IFW Dresden, D-01171 Dresden, Germany
Tao Zhang
Affiliation:
Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
Jürgen Eckert*
Affiliation:
Institute for Complex Materials, IFW Dresden, D-01171 Dresden, Germany; and Institute of Materials Science, TU Dresden, D-01062 Dresden, Germany
*
b)This author was an editor of this journal during the review and decision stage. For the JMR policy on review and publication of manuscripts authored by editors, please refer to http://www.mrs.org/jmr_policy
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Abstract

The compositional dependence of glass formation and thermal and elastic properties was clarified for the ternary La–Al–Co bulk glass-forming system. The existing linear correlation between La concentration and characteristic temperatures, i.e., the glass transition temperature Tg and the onset temperature of crystallization Tx, as well as the elastic moduli in this system can give a useful guideline for the chemical design of desirable bulk metallic glasses (BMGs) with tunable physical properties in advance. The relationship between Tg and elastic constants for the La–Al–Co BMGs can be quantitatively described using a microscopic model proposed by T. Egami.

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Articles
Copyright
Copyright © Materials Research Society 2010

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