The O mobility was studied, at 348 to 368K, by using strain relaxation methods. From the process which had the shortest relaxation time, it was deduced that the diffusivity was given by:

D (cm2/s) = 4.2 x 10-3 exp[-25.5(kcal/mol)/RT]

It was concluded that this process involved the stress-induced ordering of single O atoms, and that other processes involved O clusters and impurity-O complexes.

M.Okamoto: Acta Metallurgica, 1983, 31[8], 1169-75