Summary
The problem of impurity diffusion accompanying segregation phase nucleation on dislocations has been studied using the approximation of the local equilibrium with respect to the impurity distribution between the volume solution and dislocation regions. It has been shown that the known experimental data on diffusion and solubility of some interstitial impurities in cold-worked b.c.c. and f.c.c. metals and alloys can be described in the framework of the dislocation trap model. The characteristics of the impurity segregation regions near dislocations have been obtained from the treatment of the diffusion and solubility data for the systems. On the basis of the crystallographic and thermodynamic considerations the possibility of the existence of such segregation phase regions along dislocations in the systems in question has been shown.
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Nechaev, Y.S., Kidane, B.B. Diffusion and solubility of some interstitial impurities in deformed metals. Il Nuovo Cimento D 12, 1035–1050 (1990). https://doi.org/10.1007/BF02451948
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DOI: https://doi.org/10.1007/BF02451948