1. Dislocation multiplication in bcc molybdenum: a dislocation dynamics simulation.
- Author
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Rhee, Moono, Lassila, David H., Bulatov, Vasily V., Hsiung, Luke, and Rubia, Tomas Diaz de la
- Subjects
- *
MOLYBDENUM , *ANALYTICAL chemistry - Abstract
Plastic deformation of Mo single crystals is examined by direct simulation of dislocation dynamics under stress. Initial dislocation populations are made to mimic real dislocation microstructures observed in transmission electron microscopy cross-sections of pure annealed Mo single crystals. No a priori sources for dislocation multiplication are introduced, and yet multiplication takes place through a sequence involving aggregation of grown-in superjogs, bowing of screw dislocation segments and fast lateral motion of edge segments, producing a large number of elongated loops and a characteristic cross-grid pattern of screw dislocations. [ABSTRACT FROM AUTHOR]
- Published
- 2001
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