ABSTRACT

The amorphous alloys, produced by melt quenching, are, as is well-known, in the metastable equilibrium state. This chapter focuses on the generalisation and theoretical analysis of the previously obtained experimental results in order to formulate the general relationships of the observed phenomenon (low-temperature ΔT-effect) and propose its adequate physical model. The model of the low-temperature ΔT-effect will be used to explain the experimental data. The entire set of the results, obtained by neutron diffraction and Mössbauer spectroscopy indicates the change of the short-range order and homogenising of the amorphous matrix. The physical model of the low-temperature ΔT-effect proposed in this chapter may be used to explain the resultant experimental data and can be used as a basis for describing the microscopic mechanisms, responsible for the irreversible changes of the structure and physical properties of the amorphous alloys after low-temperature heat treatment.