The diffusion of T in austenitic stainless steel, at above 373K, was found to be closely described by the equation:

D (cm2/s) = (4.7 x 10-3) m-½ exp[-12900/RT]

where m was the isotopic mass. Diffusion below 373K was greater than predicted by this equation, due to short-circuit and grain-boundary diffusion. Cold work, before or during exposure, significantly increased diffusion. Cold-working before exposure caused short-circuit diffusion through strain-induced martensite, while deformation during exposure led to enhanced transport by moving dislocations.

M.R.Louthan, J.A.Donovan, G.R.Caskey: Nuclear Technology, 1975, 26[2], 192-200