A new criterion for predicting glass forming ability of bulk metallic glasses and some critical discussions

作者：Dong Bang shao; Zhou Shao xiong^*; Li De ren; Lu Cao wei; Guo Feng; Ni Xiao jun; Lu Zhi chao

来源：Progress in Natural Science, 2011, 21(2): 164-172.

DOI：10.1016/s1002-0071(12)60051-3

• amorphous materials
• metallic glasses
• glass-forming ability
• thermal analysis
• criterion

A modified criterion, beta', defined as T(g)/T(x)-T(g)/(T(I)-eta) (T(g), T(x), T(I) and eta denote the glass transition temperature, the onset of crystallization temperature, the liquidus temperature and constant coefficient, respectively), has been proposed for assessing the glass-forming ability (GFA) of bulk metallic glasses (BMGs). A survey of the readily available experimental data associated with the thermal analysis of various BMG alloys demonstrates that the new beta' criterion exhibits much better correlation with the GFA than other currently used criteria. But, it is more significant from statistical results to note that, all criteria including the currently proposed criterion beta', which are all combined by T(g), T(x), and T(I) almost have equal ability in measuring the glass forming ability in any glass-forming system.

• 出版日期2011-4
• 单位钢铁研究总院