Kinetics of glass transition of Ce65Al20Co15 metallic glass

Kinetics of glass transition of La65Al20Co15 metallic glass

“…This means that the La 65 Al 20 Co 15 glass gets hardly across the glass transition into the crystallization region. This finding was in good agreement with the metallic glasses reported by Wang et al [20], Jankovic et al [33], Joraid [34], and recently by Zhang et al [15]. It should be noted that the E obtained by Vyazovkin method and KAS method agree well with each other only for higher values of a.…”

“…The observed change of B g from T g-onset to T g-offset reveals a variation in the configurational states throughout the glass transition region. Similar indication of the physical significance of B g was reported in a variety of glasses [15,20,21].…”

“…The onset of the endothermic change is commonly used to define the glass transition temperature T g . To check the application of free volume model for the Kissinger's equation to the glass transition, T g is determined using three different definitions [12][13][14][15][16], which are shown in the inset of Fig. 3.…”

Thermodynamic evidence for cluster ordering in Cu46Zr42Al7Y5 ribbons during glass transition

“…This E onset value accords well with that of the slow-b relaxation mode [17,43]. Since the stable microstructures with high activation energies are generally activated at a higher temperature, it is reasonable that E 1 is larger than E onset [41]. Contradictory to this general idea, it is observed that E max decreases abnormally, although T max is higher than T 1 .…”

“…According to the recent research, the activation energy of the glass transition with one endothermic peak increases monotonically throughout the glass transition region [41]. Similarly, using Kissinger's equation, the activation energies (E) of different regions are determined, as well as that of crystallization in Cu 46 Zr 42 Al 7 Y 5 ribbons [42].…”