Abstract
Mechanical spectroscopy (measurement of internal friction and modulus of elasticity) by the vibrating-reed technique on Fe-22–31 at.% Al polycrystals has been performed in the temperature range of 100–800 K after various thermal (quenching, annealing) and mechanical (cold work) treatments. Besides the well-known Snoek and Zener internal friction peaks, and a recently discovered “X peak,” probably due to a vacancy/carbon complex, a broad relaxation peak in the range of 200–300 K has been recorded and is supposed to be related to kink nucleation and migration in dislocations.
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