Thermodiffusion mechanism for the formation of an amorphous phase during the quenching of a metal melt

A theoretical model of the formation of an amorphous phase during the quenching of a metallic melt is proposed. It has been shown that the appearance of a significant temperature gradient during the quenching of a metallic melt leads to thermodiffusion of defects and their outflow from the melt volume, which manifests itself in a significant reduction in the number of free spaces for the diffusion transfer of the atoms of the melt. Due to the thermodiffusion process, a significant restructuring of the microstructure of the medium occurs, which leads to a significant increase in viscosity, a decrease in the diffusion coefficient and specific volume of the substance, and changes in the mechanisms of deformation. The corresponding calculations of temperature distribution, thermodiffusion and distribution of the components of the melt have been carried out.