Abstract
Abstract The influence of annealing treatments over a range of temperatures encompassing the critical ordering temperature for the B2-DO3 change and inducing recovery and recrystallization have been examined for a deformed alloy based on the Fe3Al composition. The initial ordered state before heavy deformation plays no role on subsequent recovery and recrystallization, essentially because the heavy deformation destroys the prior order. Recovery occurs faster relative to the rate of recrystallization at higher temperatures. The extended period at lower temperatures where poorly recovered structures remain allows grain nucleation mechanisms to remain activated, in contrast to higher temperature situations where grain nucleation slows as grain growth dominates recrystallization. This evolution is slightly enhanced at lower temperatures as DO3 order appears, and leads to finer final grains after such lower temperature anneals. There is no evidence to indicate that dislocations influence the rate of ordering of this material.
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