An expression for the calculation of Gibbs free energy difference of multi-component bulk metallic glasses

作者：Cai, An hui^*; Chen, Hua; Li, Xiao song; Wang, Hui; Zhou, Yong; An, Wei ke

来源：Journal of Alloys and Compounds, 2007, 430(1-2): 232-236.

DOI：10.1016/j.jallcom.2006.04.072

• Gibbs free energy difference
• multi-component bulk metallic glasses
• glass-forming ability
• reduced glass transition temperature
• isenthalpic temperature

We propose an expression, Delta G = Delta H-m[{alpha(T-T-m)/(1-alpha)T-m}+{T/(1-alpha)T-m}ln(T-m/T)] (O < a < 1), for the calculation of Gibbs free energy difference Delta G of multi-component metallic alloys. The results show that the theoretical Delta Gs are in better agreement with the experimental values over entire under-cooling range than those given by the TS, KN1 and KN2 expressions. The glass-forming ability of the multi-component metallic alloys has been observed to increase with the increase in the difference of the glass transition temperature and isenthalpic temperature.

• 出版日期2007-3-14
• 单位湖南理工学院