The self-diffusion of 59Fe was studied, at 850 to 1250C, by using a modified Gruzin residual activity method. It was found that the self-diffusion coefficients satisfied:

0.4at%Mn:     D (cm2/s) = 1.5 x 10-1 exp[-267.8(kJ/mol)/RT]

2.9at%Mn:     D (cm2/s) = 4.7 x 10-2 exp[-253.3(kJ/mol)/RT]

8.1at%Mn:     D (cm2/s) = 1.0 x 10-1 exp[-261.8(kJ/mol)/RT]

19.0at%Mn:     D (cm2/s) = 1.9 x 10-2 exp[-232.1(kJ/mol)/RT]

27.8at%Mn:     D (cm2/s) = 6.3 x 10-2 exp[-235.7(kJ/mol)/RT]

37.7at%Mn:     D (cm2/s) = 1.4 x 10-2 exp[-216.4(kJ/mol)/RT]

48.8at%Mn:     D (cm2/s) = 4.2 x 10-3 exp[-205.6(kJ/mol)/RT]

and were a function of the Mn content. The pre-exponential factor and the activation energy depended linearly upon the Mn concentration.

B.Million, J.Ruzicková, J.Kucera: Zeitschrift für Metallkunde, 1993, 84[10], 687-9