Thermodynamic modeling of Zr-Ti-Cu-Ni-Be bulk metallic glass

Bhatt, Jatin ; Murty, B. S. (2009) Thermodynamic modeling of Zr-Ti-Cu-Ni-Be bulk metallic glass Transactions of the Indian Institute of Metals, 62 (4-5). pp. 413-416. ISSN 0019-493X

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Official URL: http://www.springerlink.com/content/0514772k572146...

Related URL: http://dx.doi.org/10.1007/s12666-009-0056-3

Abstract

In the present thermodynamic model, the optimization of bulk metallic glass forming compositions in Zr-Ti-Cu-Ni-Be system using enthalpy of chemical mixing (ΔHchem) as thermodynamic, mismatch entropy (ΔSσ/kB) as topological and configurational entropy (ΔSconfig/R) as statistical parameters were studied. The product of ΔHchem and ΔSσ/kB which is termed as ΔPHS in the ΔSconfig/R range of 0.9 to 1.0 can be strongly correlated to glass forming ability. Using the contributions of ΔPHS values of all ternary compositions possible in Zr-Ti-Cu-Ni-Be system, the final quinary composition is designed. Composition obtained from present model was found to closely match with compositions reported in literature.

Item Type:Article
Source:Copyright of this article belongs to Springer.
Keywords:Bulk Metallic Glasses; Enthalpy; Entropy; Quinary
ID Code:73337
Deposited On:02 Dec 2011 10:39
Last Modified:02 Dec 2011 10:39

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