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Three types of dislocation core structure in B2 alloys

V. Paidar, M. Čák.

Intermetallics, 73, 21-25, (2016)

Abstract
The mechanical properties are directly influenced by the properties of dislocation. In the relatively simple ordered structure of B2 type, the dislocation core structure is controlled by the stacking-fault-like defects as antiphase boundaries. It will be shown, that three types of B2 alloys can be distinguished differing by the degeneracy of antiphase-boundary-like defects energies on the {110} plane: crystallographic, two- and four-fold degenerated antiphase boundary energies. Various types of superlattice dislocation and their impact on dislocation mobility is discussed in this paper.


DOI: 10.1016/j.intermet.2016.02.007
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