Abstract
The anisotropic mobility of hexagonal dislocation networks (HDNs) in a series of (1 1 ¯ 0) twist boundaries under applied shear stress has been studied at the atomic scale in α-iron. A strong angular effect on the HDN mobility is found to be correlated with the dislocation core structure. The vector form of the Orowan equation and differential displacement maps of dislocation cores are used to account for the HDN behavior under loading.
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