Atomistic Determination of Cross-Slip Pathway and Energetics

Abstract

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.

Keywords

Slip (aerodynamics)EnergeticsDislocationMaterials scienceCondensed matter physicsAtomic physicsPhysicsThermodynamics

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Publication Info

Year: 1997
Type: article
Volume: 79
Issue: 19
Pages: 3676-3679
Citations: 106
Access: Closed

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APA Style

                            
                                
                                    T. Rasmussen, 
                                
                                    Karsten W. Jacobsen, 
                                
                                    T. Leffers
                                
                                et al.
                            
                            (1997). 
                            Atomistic Determination of Cross-Slip Pathway and Energetics. 
                            Physical Review Letters
                            , 79
                            (19)
                            , 3676-3679.
                            https://doi.org/10.1103/physrevlett.79.3676
                        

Identifiers

DOI: 10.1103/physrevlett.79.3676

Data Quality

Data completeness: 81%