Vernyhora I. Multiscale modeling of microstructure evolution on Ni-Fe-type alloys: the correlation between magnetic and structural properties

Object - the atomic crystal microstructure and the atomic order relaxation processes in the (para) magnetic alloys, isomorphic to fcc-Ni-Fe. The goal - to determine the regularities in mutual influence of magnetic and atomic order in alloys that are isomorphic to fcc-Ni-Fe in different thermodynamic (non)equilibrium conditions. Methods - the self-consistent and intracrystalline "molecular" field methods, the Matsubara-Kanzaki-Krivoglazice statics latmethod, the static concentration waves method, the Monte Carlo method, the Newton-Raphson method for solving the system of transcendental equations, the Onsager method, the Euler method for solving differential equations. A detailed investigation of the statistical thermodynamics (of the short-range atomic and long-range atomic and magnetic order) and the physical kinetics of fcc-Ni-Fe alloy in a wide concentration and temperature ranges is held using the fundamental concepts of M.A.Krivoglaz and A.G.Hachaturyan; a special attention is given to the study of the applicability of the classical Krivoglaz-Clapp-Moss formula to the investigation of such alloys and to the influence of the different energy contributions to the total "mixing" energy of atoms on the properties of the alloys. Scope - materials science, educational process.