The Finemet alloy prepared by the crystallization of an amorphous precursor is a basic model material for study of magnetic nanoparticle structures. Intensive plastic deformation localized in adiabatic shear bands causes the intensive heating and structural changes in the amorphous alloy. These changes influence the magnetic properties of the amorphous precursor for the Finemet crystallization.
Fractographic analysis of Co- and Fe-based high strength soft magnetic materials showed the high localization of the plastic deformation and the ductility in narrow shear bands. The estimated fracture toughness of these materials is closely associated with the scale of the local plastic zone.
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