Journal ArticleDOI
The Diffusion of Copper in Iron
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TLDR
In this article, a large discontinuity in the Arrhenius plot of the lattice diffusion coefficient at the α-γ transformation was observed, contrary to the data of Anand and Agarwala [J. Appl. Phys. 37, 4248].Abstract:
Measurements of the diffusion of 64Cu in pure and impure α and γ iron show a large discontinuity in the Arrhenius plot of the lattice diffusion coefficient at the α‐γ transformation, contrary to the data of Anand and Agarwala [J. Appl. Phys. 37, 4248 (1965)]. Grain‐boundary diffusion predominates at T≤815°C in the α phase and at T≤1250°C in the γ phase. Trapping of the radioactive copper by inclusions or impurities in solution also appears to have a profound effect on the diffusion process.read more
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Vacancy-solute interactions in ferromagnetic and paramagnetic bcc iron : Ab initio calculations
TL;DR: In this article, a database of vacancy-solute interactions in dilute alloys of bcc Fe with 3p (Al, Si, P, S), 3d (Sc-Cu), and 4d (Y-Ag) elements was developed.
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Diffusion of Nb in Fe and Fe alloys
TL;DR: In this article, the diffusion coefficients of Nb have been studied in unalloyed γ Fe over the temperature range 948-1201°C and in Fe-1·5Mn, Fe-0·6Si, and Fe−1·4Mn-0.6Si alloys over the range 1081 −1201 °C by the direct sectioning method using the isotopes 94Nb and 95Nb.
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Cu diffusion in α-Fe: determination of solute diffusivities using atomic-scale simulations
TL;DR: In this article, the results of a molecular dynamics study of Cu solute-atom diffusion in a Fe-0.9 at%Cu alloy were reported. And the main diffusion mechanisms under the conditions simulated are identified and discussed, and the effect of vacancy and solute clustering on Cu migration is assessed.
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Diffusion of trace elements in FeNi metal: Application to zoned metal grains in chondrites
TL;DR: In this article, the authors measured diffusion coefficients for P, Cr, Co, Ni, Cu, Ga, Ge, Ru, Pd, Ir, and Au in Fe metal from 1150 to 1400°C and at 1 bar and 10 kbar.
References
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Book
The mathematics of diffusion
TL;DR: Though it incorporates much new material, this new edition preserves the general character of the book in providing a collection of solutions of the equations of diffusion and describing how these solutions may be obtained.
Journal ArticleDOI
The analysis of grain boundary diffusion measurements
TL;DR: In this article, the exact solution of the grain boundary diffusion problem is evaluated numerically and the results presented in graphical form suitable for immediate application to the commoner types of experimental measurement of D?, the grain surface diffusion coefficient.