The diffusivity was measured at 1005 to 1145K by using radiotracer (64Cu) and serial sectioning methods. The data could be described by:

D (cm2/s) = 6 x 10-1 exp[-50(kcal/mol)/RT]

K.Hoshino, Y.Iijima, K.Hirano: Acta Metallurgica, 1982, 30[1], 265-71