Applied Physics and Mathematics Annotation << Back INFLUENCE OF INTERATOMIC INTERACTION PARAMETERS ON ORDERING KINETICS AND ENERGY OF TERNARY INTERMETALLICS A3 BC BASED ON FCC LATTICES A.R. KHALIKOV, S.V. DMITRIEV The paper studies a statistical model of the three-component alloy A3 BC based on the fcc lattice using the Monte Carlo method. Particular attention is paid to the parameterization of the interatomic potentials of the alloying component, since even minor changes in the corresponding constants lead to qualitatively new positions of the boundaries of structural ordering and a revision of the thermodynamic stability of the observed phases. Within the framework of numerical experiments, the temperature dependences of the ordering coefficient and correlation functions were studied, which made it possible to identify the multistage evolution of the phase transition and emphasize the critical role of fluctuations in the near-surface layers of the crystal lattice. The obtained results demonstrate that the proposed model has a high adaptability to variations in the chemical composition of the alloy and is capable of providing predetermined micro- and macrostructural characteristics of the developed materials. The practical significance of the study is determined by the possibility of targeted optimization of wear resistance, corrosion resistance and heat resistance of alloys, which opens up new prospects for the creation of special structural and functional materials with specified performance properties. Keywords: Monte Carlo method, alloy microstructure, phase transition, interatomic potentials, thermodynamic stability, intermetallic compounds, heat-resistant alloys. DOI: 10.25791/pfim.06.2025.1343 Pp. 03-12.