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Published July 7, 2006 | public
Journal Article Open

Isoconfigurational Elastic Constants and Liquid Fragility of a Bulk Metallic Glass Forming Alloy


Samples of Zr46.25Ti8.25Cu7.5Ni10Be27.5 were isothermally annealed and quenched near the glass transition temperature and studied by the pulse-echo overlap technique. The shear modulus G of the samples shows a strong reversible dependence on annealing temperatures and, thus, on the specific configurational potential energy of the equilibrium liquid. The low-T dependence of G of the configurationally frozen glasses shows linear temperature dependence as expected by Debye-Grüneisen theory. The T dependence of G in the liquid state is directly related to the viscosity and fragility of the liquid.

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©2006 The American Physical Society (Received 30 January 2006; published 5 July 2006) We acknowledge Dr. Konrad Samwer; Production Lapping Company, Inc., in Monrovia, California; the MRSEC Program CSEM of the NSF under Grants No. DMR-0080065 and No. DMR-0520565; and the MLUMPFAMTSDAMA at Caltech.


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