Abstract
An alloy of composition Fe-50Co-0.4%Cr is disordered by cold working. On annealing, recrystallization occurs in two separate temperature ranges, above 600°C and between 260 and 475°C. No recrystallization occurs between 475 and 600°C. The higher temperature regime is essentially normal recrystallization behaviour. In the lower temperature range the normal driving forces for recrystallization are reinforced by a very high driving force for ordering, resulting in a combined recrystallization and ordering transformation. Above the upper temperature limit of this behaviour (475°C) ordering occurs by an alternative mechanism and is increasingly rapid so that the combined transformation does not occur. The similarities between the ordering behaviour of cold-worked alloys and quenched-todisorder alloys are discussed.
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