The diffusion of 51Cr in the face-centered cubic phases of this alloy system was studied by using radioactive tracer techniques at between 950 and 1200C (table 55). The dependence of the diffusivity in γ-phase alloys could be described by:

D (cm2/s) = exp[(-34181/T)(1-xCr)-28.36xCr]

where x was the mole fraction.

J.Ruzicková, B.Million: Materials Science and Engineering, 1981, 50[1], 59-64

Figure 18

Diffusivity of 51Cr and 59Fe in Fe-50wt%Cr