Numerical Calculations for a Complex Model

Let us write down the equations of the balance of fluxes of components on the interfaces in the laboratory frame of reference and the equation of the conode for phase 1 and the f solution  

Consider the problem in an approximation of parabolic growth (i.e., at long periods of annealing). Then Xai = Xpi = and the width of phase 1 

The obtained set of equations allows us to find concentrations lying on conode c, c( (i.e., the concentrations of component B on the interphase 1- in phase 1 and 

The calculations have also shown that the width of the region of reaHzation of Modes I and II depends also on other parameters of the system. The interval for in which the realization of Mode I is possible, depends on the ratio 

The larger these values, the narrower is the region of reahzation of Mode I or II, respectively. Thus, there exists an interval of concentrations for , in which neither Mode I nor Mode II can be reahzed. And therefore, we assume that the diffusion path in the system will be different if the initial composition of the diffusion pair falls into regions forbidden for Modes I and II. 

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