Analysis of the nanocrystallization of Finemet type alloy by temperature-modulated differential scanning calorimetry

In this paper, the changes in the crystallization of Fe73.5Si13.5B9Cu1Nb3 Finemet type alloy, has been studied by temperature-modulated differential scanning calorimetry (MDSC) method. The main advantage of this method is the separation of reversing heat flow from non-reversing heat flow. It is demonstrated that the analysis of the reversible processes taking place in the course of the amorphous to crystalline transformation of the alloy should be used to separate the glass transition of the alloy and the Curie temperature of the Fe(Si) phase with nanometer-size crystallites, hidden under the exothermic nanocrystallization peak of the heat flow curve. Therefore, this technique is an addition to the DSC method that offers additional information in the study of thermal properties of materials.