The self-diffusion of Cu in the β-phase was measured at 803 to 1024K. The results could be described by:

D (cm2/s) = 3.9 x 10-3 exp[-81.9(kJ/mol)/RT]

M.Arita, H.Nakajima, M.Koiwa, S.Miura: Materials Transactions, 1991, 32[1], 32-6