Eur. Phys. J. B 64, 147-151 (2008)
https://doi.org/10.1140/epjb/e2008-00306-7

Estimation of Kauzmann temperature and isenthalpic temperature of metallic glasses

¹ State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, P.R. China
² Department of Mechanical and Electrical Engineering, Hunan Institute of Science and Technology, Yueyang 414000, P.R. China

Corresponding author: ^a cah1970@sohu.com

Received: 9 October 2007
Revised: 15 May 2008
Published online: 30 July 2008

Abstract

We propose expressions for the estimation of the isenthalpic temperature (, is a semi-empirical parameter and , T_m is the solidus temperature) and the Kauzmann temperature for glass forming alloys. It is found that T_k estimated by is in agreement with that directly calculated from the heat capacity data, indicating that can be used to estimate T_k of glass forming alloys. estimated by , on the other hand, widely deviates from that of directly calculated from the heat capacity data. This suggests that the enthalpy difference of the under-cooled liquid and the crystal might be a nonlinear function of the temperature below T_k . Moreover, the Gibbs free energy difference is not sensitive to the deviation of α.