Temperature study in flash annealing of metallic glasses

A method to determine the temperature of metallic amorphous alloys when heated with a current pulse ('flash annealing') is proposed. With some energetical considerations we calculate the temperature of the sample during the fast heat treatment. Theoretical curves calculated in that way are in good agreement with experimental results. The temperature of the sample during the pulse is experimentally determined by measuring the spontaneous magnetization during the current heating and comparing this with the magnetization-temperature curve obtained when heating in a conventional furnace. The influence of the different parameters appearing in the mathematical expressions on the heating process, such as the characteristics of the material, the geometry of the ribbon or the annealing conditions, is also studied.