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Energy radiation and limiting speeds of fast moving edge dislocations in tungsten

: Jin, Z.-H.; Gao, H.J.; Gumbsch, P.


Physical Review. B 77 (2008), No.9, Art. 094303, 8 pp.
ISSN: 0163-1829
ISSN: 1098-0121
ISSN: 0556-2805
Journal Article
Fraunhofer IWM ()
linear defect; dislocation; disclination; PAC 62.30. d; transonic flow; other structure

The energy loss of a uniformly moving dislocation radiating lattice waves is quantitatively studied by atomistic simulations. The velocity dependence of the energy radiation provides a unique way to understand limiting behavior exhibited by fast moving dislocations. In combination with theoretical analyses, the simulations provide a consistent atomic-level picture of near-sonic, transonic, and supersonic dislocation motions in crystalline materials.