Journal article
Atomistic Determination of Cross-Slip Pathway and Energetics
Department of Physics, Technical University of Denmark1
Computational Atomic-scale Materials Design, Department of Physics, Technical University of Denmark2
Metal Structures in Four Dimensions, Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark4
Risø National Laboratory for Sustainable Energy, Technical University of Denmark5
University of Washington6
The mechanism for cross slip of a screw dislocation in Cu is determined by atomistic simulations that only presume the initial and final states of the process. The dissociated dislocation constricts in the primary plane and redissociates into the cross-slip plane while still partly in the primary plane.
The transition state and activation energy for cross slip as well as the energies of the involved dislocation constrictions are determined. One constriction has a negative energy compared to parallel partials. The energy vs splitting width for recombination of parallel partials into a perfect dislocation is determined.
The breakdown of linear elasticity theory for small splitting widths is studied. [S0031-9007(97)04444-X].
| Language: | English |
|---|---|
| Year: | 1997 |
| Pages: | 3676-2679 |
| ISSN: | 10797114 and 00319007 |
| Types: | Journal article |
| DOI: | 10.1103/PhysRevLett.79.3676 |
| ORCIDs: | Jacobsen, Karsten Wedel |
