Thermodynamic behavior of glass-forming metallic supercooled liquids

Abstract

We analyze the enthalpy of crystallization Hx and fusion Hm, and calculate the average difference of the heat capacity between supercooled liquid and equilibrium crystalline solid ΔCave in a series of glass-forming metallic supercooled liquids. It is found that ΔCave is close to a constant 13.2J/mol/K which is an important feature for glass-forming metallic supercooled liquids, and there is no obvious correlation between the parameter φ(=1−Hx/Hm) and the glass-forming ability. The ratio of ΔCave to the entropy of fusion is an important parameter in determining the glass-forming ability in metallic glasses.