Abstract

Changes in electrical resistivities of Al-4.5 at%Zn alloys in an initial stage of aging were measured and compared with results obtained from simulation experiments. There was a qualitative agreement in both results. Then the rate equation of growth of G.P.zones based on the vacancy pump model derived by Girifalo and Herman was examined with the simulation experiments, and its validity was confirmed. Furthermore, the scaling laws for size distributions of clusters of solute atoms and the structure functions for the spatial configurations of the solute atoms in Al-Zn alloys were also satisfied in the simulation experiments.

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