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- W1969709719 abstract "Four commonly used embedded atom method potentials for bcc-Fe by Ackland et al. (1997), Mendelev et al. (2003), Chiesa et al. (2009) and Malerba et al. (2010) are critically evaluated with respect to their description of the edge dislocation core structure and its dynamic behavior. Our results allow us to quantify the transferability of the various empirical potentials in the study of the ½〈1 1 1〉{1 1 0} edge dislocation core structure and kinetics. Specifically, we show that the equilibrium dislocation core structure is a direct consequence of the shape of the extended gamma surface. We further find that there is a strong correlation between the structure of the edge dislocation core and its glide stress. An in depth analysis of the dislocation migration results reveals that the dominant migration mechanism is via progressing straight line segments of the dislocation. This is further confirmed by the excellent qualitative agreement of nudged elastic band calculations of the Peierls barrier with the dynamically determined critical shear stresses." @default.
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- W1969709719 date "2014-05-01" @default.
- W1969709719 modified "2023-10-01" @default.
- W1969709719 title "Influence of the dislocation core on the glide of the ½〈111〉{110} edge dislocation in bcc-iron: An embedded atom method study" @default.
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- W1969709719 doi "https://doi.org/10.1016/j.commatsci.2014.02.031" @default.
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