Wheeler, J. M. ; Maier, V. ; Durst, K. ; Göken, M. ; Michler, J. (2013)
Activation parameters for deformation of ultrafine-grained aluminium as determined by indentation strain rate jumps at elevated temperature.
In: Materials Science and Engineering: A, 585
doi: 10.1016/j.msea.2013.07.033
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The hardness and strain rate sensitivity of ultrafine-grained (UFG) aluminium was examined as a function of temperature using in situ strain rate jump indentation in a SEM at temperatures up to 250 °C. Measured strain rate sensitivities were in good agreement with earlier bulk compression measurements. Activation energies and volumes for deformation were extracted and discussed. Transitions in the deformation mechanism are observed at lower temperatures for smaller grain sizes.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2013 |
| Autor(en): | Wheeler, J. M. ; Maier, V. ; Durst, K. ; Göken, M. ; Michler, J. |
| Art des Eintrags: | Bibliographie |
| Titel: | Activation parameters for deformation of ultrafine-grained aluminium as determined by indentation strain rate jumps at elevated temperature |
| Sprache: | Englisch |
| Publikationsjahr: | 15 November 2013 |
| Verlag: | Elsevier Science Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Materials Science and Engineering: A |
| Jahrgang/Volume einer Zeitschrift: | 585 |
| DOI: | 10.1016/j.msea.2013.07.033 |
| Kurzbeschreibung (Abstract): | The hardness and strain rate sensitivity of ultrafine-grained (UFG) aluminium was examined as a function of temperature using in situ strain rate jump indentation in a SEM at temperatures up to 250 °C. Measured strain rate sensitivities were in good agreement with earlier bulk compression measurements. Activation energies and volumes for deformation were extracted and discussed. Transitions in the deformation mechanism are observed at lower temperatures for smaller grain sizes. |
| Freie Schlagworte: | Indentation, Scanning electron microscopy (SEM), Ultrafine-grained metals, High temperature deformation |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Physikalische Metallkunde 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 03 Dez 2014 13:40 |
| Letzte Änderung: | 03 Dez 2014 13:40 |
| PPN: | |
| Sponsoren: | Financial support was provided by the German Research Council (DFG), which, within the framework of its ‘Excellence Initiative' supports the Cluster of Excellence “Engineering of Advanced Materials”. |
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