Considerations of solute-drag in relation to transformations in steels

H. K. D. H. Bhadeshia


In recent years, solute-drag theory has been widely quoted to explain apparent discrepancies in kinetic measurements of transformations in steels. Since conventional impurity drag theory is concerned solely with drag at grain boundaries, many new, or "special" drag models have been developed to apply at interphase interfaces. An assessment is made of these special drag theories, and of the experimental evidence claimed in their support. It is found that our understanding of solute-drag at interphase interfaces is weak, and that the experimental evidence for the existence of solute drag at transformation interfaces in steels is very doubtful.

Journal of Materials Science, Vol. 18, 1983, pp. 1473-1481.

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Solute drag and kinetics.

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