Abstract
Two alternative models for description of phase formation and competition are suggested: (1) 3D generalization of Martin–Erdelyi–Beke model of simultaneous interdiffusion and ordering in binary diffusion couples with face-centered cubic (FCC) or body-centered cubic (BCC) coherent lattices and (2) phase-field-type model with random choice of phase variable for elementary cells with compositions within two-phase regions. Dependence of phase nucleation and phase competition on thermodynamic and kinetic factors is studied.
Acknowledgements
The work is supported by The State Fund for Fundamental Researches of Ukraine (Project F40.7/040) and by Ministry of Education and Science of Ukraine.