Haug, C. ; Ruebeling, F. ; Kashiwar, A. ; Gumbsch, P. ; Kübel, C. ; Greiner, C. (2020)
Early deformation mechanisms in the shear affected region underneath a copper sliding contact.
In: Nature Communications, 11 (1)
doi: 10.1038/s41467-020-14640-2
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Dislocation mediated plastic deformation decisively influences the friction coefficient and the microstructural changes at many metal sliding interfaces during tribological loading. This work explores the initiation of a tribologically induced microstructure in the vicinity of a copper twin boundary. Two distinct horizontal dislocation traces lines (DTL) are observed in their interaction with the twin boundary beneath the sliding interface. DTL formation seems unaffected by the presence of the twin boundary but the twin boundary acts as an indicator of the occurring deformation mechanisms. Three concurrent elementary processes can be identified: simple shear of the subsurface area in sliding direction, localized shear at the primary DTL and crystal rotation in the layers above and between the DTLs around axes parallel to the transverse direction. Crystal orientation analysis demonstrates a strong compatibility of these proposed processes. Quantitatively separating these different deformation mechanisms is crucial for future predictive modeling of tribological contacts.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2020 |
| Autor(en): | Haug, C. ; Ruebeling, F. ; Kashiwar, A. ; Gumbsch, P. ; Kübel, C. ; Greiner, C. |
| Art des Eintrags: | Bibliographie |
| Titel: | Early deformation mechanisms in the shear affected region underneath a copper sliding contact |
| Sprache: | Englisch |
| Publikationsjahr: | 11 Februar 2020 |
| Verlag: | Nature Publishing Group |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Nature Communications |
| Jahrgang/Volume einer Zeitschrift: | 11 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1038/s41467-020-14640-2 |
| URL / URN: | https://doi.org/10.1038/s41467-020-14640-2 |
| Kurzbeschreibung (Abstract): | Dislocation mediated plastic deformation decisively influences the friction coefficient and the microstructural changes at many metal sliding interfaces during tribological loading. This work explores the initiation of a tribologically induced microstructure in the vicinity of a copper twin boundary. Two distinct horizontal dislocation traces lines (DTL) are observed in their interaction with the twin boundary beneath the sliding interface. DTL formation seems unaffected by the presence of the twin boundary but the twin boundary acts as an indicator of the occurring deformation mechanisms. Three concurrent elementary processes can be identified: simple shear of the subsurface area in sliding direction, localized shear at the primary DTL and crystal rotation in the layers above and between the DTLs around axes parallel to the transverse direction. Crystal orientation analysis demonstrates a strong compatibility of these proposed processes. Quantitatively separating these different deformation mechanisms is crucial for future predictive modeling of tribological contacts. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > In-Situ Elektronenmikroskopie |
| Hinterlegungsdatum: | 29 Mai 2020 07:19 |
| Letzte Änderung: | 12 Jun 2024 05:46 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum