Tracer sectioning was used to study the diffusion of 14C in the 0.17C-0.5Si-1.2wt%Mn steel. The results could be described by:

D (cm2/s) = 4.65 x 102 exp[-42.5(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

 

Table 117

Grain Boundary Diffusion Parameters for 22P in Fe-Mn

 

P (at%)

Mn (at%)

Temperature (K)

Do (m2/s)

E (kJ/mol)

-

-

1018-1153

3.03 x 10-9

218

0.16

-

974-1155

4.30 x 10-12

153

0.18

-

974-1153

3.36 x 10-11

168

0.38

-

932-1153

2.31 x 10-10

192

0.17

0.38

983-1077

2.85 x 10-10

192

0.11

2.11

974-1077

6.58 x 10-12

152