Changes in the Structure of the Amorphous Phase under Heat Treatment and Deformation

The influence of heat treatment and deformation on a change in the structure of amorphous alloys Co67Fe7Si12B9Nb5, Al87Ni8Y5, Al88Ni6Y6, Al87Ni8Gd5, Al87Ni8La5, and Zr50Cu15Ti16Ni19 obtained by melt quenching is studied. It is established that both heat treatment and deformation lead to the formation of a heterogeneous structure, while structure inhomogeneities can be due to the formation of regions both with different concentrations of components (during heat treatment) and/or with a different density (free volume concentration). At the early stages of crystallization, the phase composition of the emerging structure depends on the type of impact on the amorphous structure and processing parameters (temperature, and type and degree of deformation). The sizes of nanocrystals and the fraction of the nanocrystalline component depend on the history of the sample.