Kinetics of formation of a phase with an arbitrary stoichiometric composition in a multicomponent solid solution.

摘要: A kinetic theory of nucleation and growth a evolving phase with given stoichiometric composition in multicomponent solid solution is developed. It assumed naturally that the grows as result individual atom incorporation into domain ratio. As it shown, for case formation system basic equations, describing nucleation-growth process, can be reduced formally to respective expression derived processes one-component systems. However, effective diffusion coefficients supersaturation are expressed nontrivial combinations thermodynamic parameters different components involved process. In determination these properties, not restricted its applicability perfect solutions but extended real mixtures. Thus, may applied directly towards interpretation experimental data. present paper, particular attention devoted analysis two stages overall transformation process: (1) stage quasi-steady-state (2) transient coarsening. results this analysis, rate, number clusters formed via growth, time evolution cluster size distributions established. Moreover, estimates duration