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.
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