Structure and magnetoelastic properties of partially nanocrystallized Fe_(73.5)Nb_3Cu_1Si_(16.5)B_6 alloy

摘要

The investigation presented in this paper was carried out on ribbon ring samples annealed for 1 hour at various temperatures (T_a = 410, 440, 470, 500 and 580℃) in order to achieve different stages of nanocrystallization and different magnetic properties. To achieve the full description of crystallization process, both X-ray diffraction method (XRD) as well as differential scanning calorimetry (DSC) were utilized. For magnetoelastic tests, nonmagnetic cylindrical backings were used in order to obtain uniform compressive stresses and enable sample to be wound. In this paper the changes of flux density B as a function of compressive stresses σ (for constant values of the magnetizing field H) for samples at different stages of nanocrystallization are presented.