The self-diffusion of Fe was investigated by using the radiotracer technique and the isotope, 59Fe. The data (table 33, figure 6) could be described by:

59Fe in Fe52Al48 (B2):     D (m2/s) = 4.1 x 10-3 exp[-2.72(eV)/kT]

M.Eggersmann, H.Mehrer: Philosophical Magazine A, 2000, 80[5], 1219-44

Figure 6

Diffusivity of 59Fe in Fe52Al48