Evaluation of glass-forming ability for bulk metallic glasses based on characteristic temperatures

Which glass stability criterion is the best?

“…Namely, m is the reciprocal value of the reduced glass transition temperature and the parameter r can be correlated to T xg , as can be seen in the works of Lu and Liu [8], Mondal [11], or in a recent work of Zhang et al [15]. In order to enable the comparison for different glasses, the value of the super cooled region is divided by T g [8], which gives (T x − T g )/T g = r − 1.…”

“…The higher the ability, the smaller the value of R c . Therefore, the criteria ω and ω 2 , which are defined in [14,15] and behave according to Eq. (2), should not be eliminated.…”

“…T g /T x − 2T g /(T g + T l ) [14], ω 2 = T g /(2T x − T g ) − T g /T l [15]. (In the following text we will denote glass stability criteria generally with G.)…”

Evaluation of glass-forming ability criterion from phase-transformation kinetics

“…Most of them comply with Rule 1 except T rg . γ do not comply with Rules 2 and 3, however, ω [11], ω 2 [12] and ξ [13] comply with Rule 2 and partially with Rule 3. Thus, from this work's point of view, we can predict that, among the criteria listed in Table 3, ω, ω 2 and ξ are the most proper criteria, γ takes the second place, T rg is the most inferior.…”

Evaluation of glass-stability criteria for chalcogenide glasses: Effect of experimental conditions

“…In addition to the effect of heating rate, the influence of sample particle size will be also examined. The most successful glass stability criteria will be employed in this regard: Hrubý [7], Weinberg [8], Lu and Liu [9], Long et al [10] and Zhang et al [11]. The following equations are used to express these criteria in the respective order.…”