The diffusivity of 51Cr was determined by using serial sectioning methods. The data for 1201 to 1479K could be described by:

D (cm2/s) = 4.53 x 10-3 exp[-32.8(kcal/mol)/RT]

It was deduced that the correlation factors were negative, and it was suggested that interstitial/vacancy pairs and ω-phase embryos might be rate-controlling.

R.V.Patil, G.P.Tiwari, B.D.Sharma: Philosophical Magazine A, 1981, 44[3], 717-33