The structure and mechanical properties of amorphous alloy Ni44Fe29Co15Si2B10 after
severe plastic deformation (SPD) in Bridgman chamber at the different temperatures (77 and 298 K)
have been studied. It is shown that the early stages of the SPD of amorphous alloy cause a
noticeable decrease in microhardness HV and significant changes in the physical properties. With
increasing the value of SPD the transition from inhomogeneous to homogeneous (or to qualitatively
different) mode of plastic flow is observed, which is accompanied by the effects of homogeneous
nanocrystallization. The nanoparticle size does not exceed 10 nm. It is established that the thermally
activated nanocrystallization processes can occur at very low temperatures (77 K).