By using electron probe microanalysis, the diffusion of V in 18Mn-3.6wt%Cr steel was measured at 1173 to 1423K. The diffusion data could be described by:
D (cm2/s) = 3.1 x 100 exp[-275.8(kJ/mol)/RT]
B.Million, K.Ciha, J.Krumpos, K.Stransky: Kovove Materialy, 1976, 14[6], 636-50
Table 174
Diffusion Coefficients for 57Ni in Fe-20Ni-15Cr-1.45at%Si
Temperature (C) | Atmosphere/Grain Size | D (cm2/s) |
1363 | He/fine | 6.63 x 10-10 |
1244 | Ar/fine | 9.48 x 10-11 |
1168 | vacuum/fine | 3.79 x 10-11 |
1108 | Ar/fine | 6.22 x 10-12 |
1068 | He/coarse | 4.72 x 10-12 |
963 | vacuum/coarse | 4.33 x 10-13 |