Internal friction measurements were performed on Fe–Al alloys at 100 to 960K using the vibrating-reed technique. The concentration of Al was varied between 0 (pure Fe) and 50at%Al (FeAl) to analyze the effect of Al. Four damping peaks were observed. From the Snoek-type peak, the parameters of the short-range diffusion of C in Fe–Al alloys were determined, while the isothermal annealing at temperatures near the Snoek-type peak has yielded information about the long-range diffusion during precipitation of carbides.

Influence of Al Concentration on the Short-Range and Long-Range Diffusion of Carbon in Fe–Al Alloys. A.Strahl, I.S.Golovin, H.Neuhäuser, S.B.Golovina, H.R.Sinning: Materials Science and Engineering A, 2006, 442[1-2], 128-32