Abstract
The volume and grain-boundary diffusion of59Fe and51Cr have been studied in an austenitic iron alloy containing 17 wt pct Cr and 12 wt pct Ni. The diffusivities in this alloy of these two tracers and63Ni are compared with their diffusivities in pure iron and in other austenitic stainless steels. For volume diffusion at any particular temperature in the present alloy, Cr is the most rapid while Ni is the slowest, and all three tracers diffuse slower than that reported for pure iron or for other austenitic stainless steels. For grain-boundary transport, Fe diffuses most rapidly above 850°C and Ni diffuses most rapidly below that temperature. The activation energies for both volume and grain-bounary diffusion obey the relationshipQ Ni <Q Cr <Q Fe.
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Formerly Presidential Intern in the Metals and Ceramics Division, Oak Ridge National Laboratory
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Perkins, R.A., Padgett, R.A. & Tunali, N.K. Tracer diffusion of59Fe and51Cr in Fe-17 Wt Pet Cr-12 Wt Pet Ni austenitic alloy. Metall Trans 4, 2535–2540 (1973). https://doi.org/10.1007/BF02644255
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DOI: https://doi.org/10.1007/BF02644255