Schäfer, Jonathan ; Albe, Karsten (2012)
Influence of solutes on the competition between mesoscopic grain boundary sliding and coupled grain boundary motion.
In: Scripta Materialia, 66 (5)
doi: 10.1016/j.scriptamat.2011.11.031
Artikel, Bibliographie
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Kurzbeschreibung (Abstract)
The competition between coupled grain boundary motion and mesoscopic grain boundary sliding as deformation mechanisms in polycrystalline metals is studied for nanocrystalline Cu with and without solutes by molecular dynamics computer simulations. It is shown that coupled grain boundary motion contributes to plastic deformation, and it is found that it leads to the suppression of mesoscopic grain boundary sliding. Segregating solutes, however, effectively pin the grain boundaries in place and allow for grain boundary sliding on a mesoscopic scale.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2012 |
| Autor(en): | Schäfer, Jonathan ; Albe, Karsten |
| Art des Eintrags: | Bibliographie |
| Titel: | Influence of solutes on the competition between mesoscopic grain boundary sliding and coupled grain boundary motion |
| Sprache: | Englisch |
| Publikationsjahr: | März 2012 |
| Verlag: | Elsevier Science Publishing Company |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Scripta Materialia |
| Jahrgang/Volume einer Zeitschrift: | 66 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.1016/j.scriptamat.2011.11.031 |
| Kurzbeschreibung (Abstract): | The competition between coupled grain boundary motion and mesoscopic grain boundary sliding as deformation mechanisms in polycrystalline metals is studied for nanocrystalline Cu with and without solutes by molecular dynamics computer simulations. It is shown that coupled grain boundary motion contributes to plastic deformation, and it is found that it leads to the suppression of mesoscopic grain boundary sliding. Segregating solutes, however, effectively pin the grain boundaries in place and allow for grain boundary sliding on a mesoscopic scale. |
| Freie Schlagworte: | Nanocrystalline materials, Grain boundary segregation, Plastic deformation, Molecular dynamics |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialmodellierung |
| Hinterlegungsdatum: | 31 Aug 2012 09:57 |
| Letzte Änderung: | 26 Aug 2018 21:27 |
| PPN: | |
| Sponsoren: | DFG Al578-7, The authors acknowledge financial support by the Deutsche Forschungsgemeinschaft (DFG) through Forschergruppe 714., Computing time was made available by HHLR Frankfurt and Darmstadt, as well as by CSC Jülich. |
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