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
Article, Bibliographie
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.
| Item Type: | Article |
|---|---|
| Erschienen: | 2013 |
| Creators: | Wheeler, J. M. ; Maier, V. ; Durst, K. ; Göken, M. ; Michler, J. |
| Type of entry: | Bibliographie |
| Title: | Activation parameters for deformation of ultrafine-grained aluminium as determined by indentation strain rate jumps at elevated temperature |
| Language: | English |
| Date: | 15 November 2013 |
| Publisher: | Elsevier Science Publishing |
| Journal or Publication Title: | Materials Science and Engineering: A |
| Volume of the journal: | 585 |
| DOI: | 10.1016/j.msea.2013.07.033 |
| 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. |
| Uncontrolled Keywords: | Indentation, Scanning electron microscopy (SEM), Ultrafine-grained metals, High temperature deformation |
| Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Physical Metallurgy 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences |
| Date Deposited: | 03 Dec 2014 13:40 |
| Last Modified: | 03 Dec 2014 13:40 |
| PPN: | |
| Funders: | 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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