Activation parameters for deformation of ultrafine-grained aluminium as determined by indentation strain rate jumps at elevated temperature

Wheeler JM, Maier V, Durst K, Göken M, Michler J (2013)

Publication Type: Journal article

Publication year: 2013

Journal

Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing Elsevier

Book Volume: 585

Pages Range: 108-113

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.

Authors with CRIS profile

Verena Maier Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Karsten Durst Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Mathias Göken Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

Related research project(s)

In-situ nanomechanics and FIB tomography of thin films (EXC315 EAM (A2-3)) Exzellenz-Cluster Engineering of Advanced Materials Nov. 1, 2012 - Oct. 31, 2017

Involved external institutions

Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa) / Swiss Federal Laboratories for Materials Science & Technology CH Switzerland (CH)

How to cite

APA:

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. Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 585, 108-113. https://dx.doi.org/10.1016/j.msea.2013.07.033

MLA:

Wheeler, J. M., et al. "Activation parameters for deformation of ultrafine-grained aluminium as determined by indentation strain rate jumps at elevated temperature." Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 585 (2013): 108-113.

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