By using electron probe microanalysis, the diffusion of Fe in 18Mn-3.6wt%Cr steel was measured at 1173 to 1423K. The diffusion data could be described by:

D (cm2/s) = 1.00 x 100 exp[-266.6(kJ/mol)/RT]

B.Million, K.Ciha, J.Krumpos, K.Stransky: Kovove Materialy, 1976, 14[6], 636-50

 

Table 171

Grain Boundary Diffusion of Fe in Incoloy 800

 

Temperature (K)

D (m2/s)

750

1.22 x 10-16

810

7.58 x 10-16

870

4.17 x 10-15

940

2.04 x 10-14

1020

1.16 x 10-13

1100

4.23 x 10-13