Correlation of delta-ferrite precipitation with austenite grain growth during annealing of steels

Zhang, X. F.; Terasaki, H. and Komizo, Y. (2011). Correlation of delta-ferrite precipitation with austenite grain growth during annealing of steels. Philosophical Magazine Letters, 91(7) pp. 491–497.

DOI: https://doi.org/10.1080/09500839.2011.587464

Abstract

Grain-boundary migration can be retarded by the presence of particles via the so-called Zenner pinning effect. This originates from the pinning of inclusions or solute drag on the grain boundary. In this study on two steels, delta-ferrite precipitation along an austenite grain-boundary suppressed grain growth at high temperatures. The inhibiting effect is very strong, with the inclusions and solute losing their efficiency for grain-boundary pinning.

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