A study of grain boundary statistics in 304 and 316L stainless steels

1 December 1991

journal article
research article
Published by Taylor & Francis in Philosophical Magazine A

Vol. 64 (6) , 1319-1330
https://doi.org/10.1080/01418619108225351

Abstract

The distribution of grain boundaries by misorientation parameters in two austenitic stainless steels, AISI types 304 and 316L, having different stacking fault energies, have been studied by means of transmission electron microscopy. The results obtained show that grain boundary spectrum is characterized by the dominance of Σ3ⁿ boundaries and is quasi-stable in f.c.c. materials with low and medium stacking fault energy that are susceptible to annealing twinning. However, the distribution of the lengths of different grain boundary types in these materials is sensitive to the stacking fault energy. Only Σ3 boundaries have been found to be energetically favoured, while the observed preponderance of Σ9 and Σ27 is due to geometrical reasons: they are necessary for providing connection between Σ3 boundaries in the process of multiple twinning.

Keywords

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