The influence of casting currents on the thermal stability of the Cu 36 Zr 48 Al 8 Ag 8 amorphous alloy

The effects of casting currents on the thermal stability of Cu 36 Zr 48 Al 8 Ag 8 amorphous alloys were investigated. Differential scanning calorimetry and resistivity experiments show that the activation energy (∆ E x ,∆ E p ) of Cu 36 Zr 48 Al 8 Ag 8 amorphous alloy increases with elevating currents. Annealing experiments reveal that crystallization of low‐current samples occurs prior to that of high‐current samples. These results indicate that casting currents could enhance the thermal stability of amorphous alloys. The reason is analyzed from the viewpoint of melt state. These results could be used to provide a possible route to fabricate amorphous alloys with improved thermal stability.