Abstract
A brief description of a grain growth model and the results of its verification in the case of secondary recrystallization (SR) in 2D polycrystal are given. The variation coefficient of grain size distribution is shown to be a metric characteristic sensitive to the beginning of SR. The average grain size in topological class changes linearly with the class number, the coefficient of proportionality for secondary grains being six times greater than that for primary ones. The average topological class of grains adjacent to the growing one is inversely proportional to the topological class of the latter. These results lead to the conclusion that the average size of the former is smaller than the average size of matrix grains, which provides increased driving force for growth of large secondary grains.
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