GEOMETRIC INTERPRETATION OF THE DECOMPOSITION OF SUPERSATURATES SOLID-SOLUTIONS

A graphical method was used for the analysis of the decomposition of s upersaturated solid solutions. The surface Z = Z(T, t) describing the dependence of the Gibbs free energy on the difference between the temp eratures of equilibrium and nonequilibrium states and on the time of t he transition to nonequilibrium state (quenching) is constructed in th e ''T-t-Z'' coordinates. The geometric constructions made in the ''T-t '' coordinates suggest that the kinetics of the decomposition of super saturated solid solutions is determined not only by activation energy Q but also by the pre-exponential factor tau(0).