Process of New Phase Nucleation in Alloys

The article presents a generalization of our electron microscopic results got on some binary and ternary alloys based on Ni,Fe or Co.They are considered as the basis for the conclusion that chemical bonds between atoms are realized in alloys according to the principle of pair interaction.This process begins with the separation of the alloy into diffusion micro-pairs already in the liquid state,which makes it possible to consider the liquid state of the alloy as the initial stage of the new phase formation.With a subsequent decrease in temperature,particles of a new phase form inside a diffusion micro-pair.The formation of diffusion micro-pairs and phases within them occurs due to the existence in alloys,along with a metallic bond,of ionic and covalent components of a strong chemical bond at all temperatures of the condensed state.The article shows what exactly needs to be done so that such a branch of science as materials science could get rid of the empirical approach when creating new alloys.