Molecular dynamics study of self-diffusion in the core of a screw dislocation in face centered cubic crystals
| Autor: | Panthea Sepehrband, Niaz Abdolrahim, Siavash Soltani |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Dislocation creep Self-diffusion Materials science Condensed matter physics Mechanical Engineering Metals and Alloys chemistry.chemical_element 02 engineering and technology Cubic crystal system 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Copper Crystallographic defect Nickel Crystallography chemistry Mechanics of Materials 0103 physical sciences Partial dislocations General Materials Science 0210 nano-technology Stacking fault |
| Zdroj: | Scripta Materialia. 133:101-104 |
| ISSN: | 1359-6462 |
| DOI: | 10.1016/j.scriptamat.2017.02.021 |
| Popis: | Self-diffusion along the screw dislocation core in aluminum, nickel, copper and silver in the absence of any pre-existing point defects in the structure is studied using molecular dynamics. Simulation results show that the effect of screw dislocation on enhancing self-diffusion is more remarkable in Al and Ni than in Cu, and no significant enhancement of self-diffusion has been observed in the core regions of Ag. This behavior has been related to higher stacking fault energies and resultant smaller dissociation distance of partial dislocations in Al and Ni, compared to Cu and Ag. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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