EVOLUTION OF STRUCTURE DURING LOCAL PLASTIC DEFORMATION IN Fe-Ni-B METALLIC GLASS

A. Jurikova, K. Csach, and J. Miskuf (Institute of Experimental Physics of Slovak Academy of Sciences, Kosice): Evolution of Structure during Local Plastic Deformation in Fe-Ni-B Metallic Glass In metastable amorphous metals the structural relaxation is closely related to the free volume annihilation. In the work we studied the deformation-induced structural changes in the Fe-Ni-B amorphous ribbon. The enthalpy changes connected with structural relaxation of the deformed samples as well as non-deformed samples were measured. With the increasing the amount of stored deformation energy the larger enthalpy changes are observed. The deformation-introduced free volume has lower energy and can achieve similar to 1/3 of the free volume amount introduced by rapid quenching of the melt during metallic glass preparation.