Tracer sectioning was used to study the diffusion of 14C in the 0.17C-0.2Si-1Cr-1wt%Mn steel. The results could be described by:

D (cm2/s) = 5.62 x 100 exp[-40.0(kcal/mol)/RT]

S.V.Zemskii, D.A.Litvinenko, V.I.Grigorkin, T.V.Kharchikova: Izvestiya Vysshikh Uchebnykh Zavedenii Chernaya Metallurgiya, 1973, 6, 93-6