Abstract
The motion of an edge dislocation gliding in a bcc lattice under shear loading is simulated by molecular dynamics. The time evolution of the dislocation profile, derived by analyzing the spatial disregistry between two adjacent atomic rows, reveals frequent nucleation of double kinks and little activity in kink migration in association with the dislocation motion. An essentially linear stress variation is obtained, while the temperature dependence suggests the mechanism of phonon drag.
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Chang, J., Bulatov, V.V. & Yip, S. Molecular dynamics study of edge dislocation motion in a bcc metal. Journal of Computer-Aided Materials Design 6, 165–173 (1999). https://doi.org/10.1023/A:1008716911551
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DOI: https://doi.org/10.1023/A:1008716911551