Abstract
The dislocation substructures in the DO3-structured alloys, Fe-34AI and Fe-28AI-6Cr, were examined by transmission electron microscopy following room temperature compression. In both alloys a small number of a<001> dislocations, produced through the energetically favourable interaction of two pairs of antiphase boundary-coupled a/2<1 1 1> dislocations, was observed. It was also found that, relative to the binary alloy, one effect of the chromium addition was to increase the B2 character of the alloy, but conversely to decrease the DO3 character. These results are rationalized on the basis of the atom site location of the chromium atoms in the DO3 structure.
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Munroe, P.R., Baker, I. Room temperature deformation modes in DO3-structured Fe-34AI and Fe-28AI-6Cr. J Mater Sci 28, 2299–2303 (1993). https://doi.org/10.1007/BF01151656
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DOI: https://doi.org/10.1007/BF01151656