Abstract
Diffusion interaction parameters δ^C_C, δⁱ_C expressing the dependence of carbon diffusivities D(C) on carbon N(C) and alloying N(i) elements concentrations in austenitic ternary alloys Fe-C-M are presented. The parameters δ^C_C, δⁱ_C differ from the parameters β^C_C, β^C_C expressing the D(C) dependence on N(C), N(i) concentrations in polycomponent alloys and steels. The values δ^C_C, δⁱ_C are calculated on the basis of literature data. The parameters β^C_C, β^C_C published in our previous paper are introduced for comparison sake. The results of analysis showing the dependence of carbon D(C) diffusivity on its own concentration N(C) in γFe are added.

Key words
carbon, diffusion, concentration dependence, austenitic, ternary alloys, Fe-C-M

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