The dislocation structures of large-grained low-temperature annealed Fe-45at%Al + B specimens that had been strained to failure, at temperatures ranging from 400 to 1000K, were investigated by means of transmission electron microscopy. At temperatures of up to 700K, only <111> slip was observed but, in specimens that had been strained at 800K or above, both <111> and <001> slip was observed. The onset of <001> slip at 800K coincided with the temperature at which a peak in the yield stress occurred in this alloy. Optical metallography revealed no evidence for grain-boundary migration or dynamic recrystallization. However, at 1000K both static recrystallization and significant cavitation occurred.

P.R.Munroe, I.Baker: Philosophical Magazine A, 1995, 72[5], 1301-10