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Abstract
The effects of plastic deformation on the microstructure and the magnetization in an Fe-35at.° Al alloy deformed at different temperatures have been examined. Changes in the susceptibility and the spontaneous magnetization have been measured as functions of strain and correlated with the development of the microstructure observed by high-voltage electron microscopy. Special interest is focused on the formation of the antiphase boundary tubes by superdislocation motion and its effect on magnetization. The increases in the susceptibility and the spontaneous magnetization have been attributed to the local change in the ordering of D03 and B2 phases by superdislocation motion, which is especially predominant at a low temperature possibly in the absence of dislocation climb.