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Iron aluminides show an anomalous peak in yield stress at an intermediate temperature, as superdislocations of 111 Burgers vector are replaced by dislocations of Burgers vector 100 . Changes in yield stress and in dislocation configurations as a function of test temperature have been examined while deforming over a wide range of strain rates in order to determine the mechanisms responsible...
The influence of annealing treatments over a range of temperatures encompassing the critical ordering temperature for the B2-DO 3 change and inducing recovery and recrystallization have been examined for a deformed alloy based on the Fe 3 Al composition. The initial ordered state before heavy deformation plays no role on subsequent recovery and recrystallization, essentially because...
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