Contribution of twinning to low strain deformation in a Mg alloy Barnett,MR, Ghaderi,A and Robson,JD 2014, Contribution of twinning to low strain deformation in a Mg alloy, Metallurgical and materials transactions A: physical metallurgy and materials science, vol. 45, no. 8, pp. 3213-3221, doi: 10.1007/s11661-013-2029-8. Attached Files Name Description MIMEType Size Downloads Title Contribution of twinning to low strain deformation in a Mg alloy Author(s) Barnett,MR orcid.org/0000-0001-8287-9044 Ghaderi,A orcid.org/0000-0002-6774-9302 Robson,JD Journal name Metallurgical and materials transactions A: physical metallurgy and materials science Volume number 45 Issue number 8 Start page 3213 End page 3221 Publisher Springer Place of publication New York, NY Publication date 2014-07 ISSN 1073-5623 1543-1940 Keyword(s) Science & Technology Technology Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science SITU NEUTRON-DIFFRACTION MAGNESIUM ALLOY AZ31 COMPRESSION RELAXATION BEHAVIOR MODELS Summary Deformation twinning plays an important role in the yielding of extruded magnesium alloys, especially when loaded in compression along the extrusion axis. The magnitude of this contribution is not accurately known. The present study employs electron backscatter diffraction to reveal the influence of grain orientation on twin-volume fraction for alloy AZ31 tested in compression to strains between 0.008 and 0.015. For these strains, it is seen that approximately 45 pct of the deformation can be attributed to "tensile" twinning. The variation of twin-volume fraction over different orientation classes correlates closely with the maximum Schmid factors for both tensile twinning and basal slip. These effects are readily explained quantitatively using a mean field crystal plasticity model without recourse to stochastic effects. Encouraged by this, we introduce an analytical approximation based on the uniformity of (axial) work. © 2013 The Minerals, Metals & Materials Society and ASM International. Language eng DOI 10.1007/s11661-013-2029-8 Field of Research 091207 Metals and Alloy Materials Socio Economic Objective 861199 Basic Metal Products (incl. Smelting HERDC Research category C1 Refereed article in a scholarly journal ERA Research output type C Journal article Copyright notice ©2014, Springer Persistent URL http://hdl.handle.net/10536/DRO/DU:30069825 Document type: Journal Article Collections: Institute for Frontier Materials GTP Research Related Links Link Description Connect to published version Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Wed, 18 Feb 2015, 13:45:22 EST Thu, 19 Feb 2015, 04:02:04 EST Wed, 18 Mar 2015, 05:07:47 EST Fri, 20 Mar 2015, 08:44:16 EST Fri, 20 Mar 2015, 08:50:15 EST Filtered Full Citation counts:   Cited 8 times in TR Web of Science Cited 10 times in Scopus Search Google Scholar Access Statistics: 670 Abstract Views, 2 File Downloads  -  Detailed Statistics Created: Wed, 18 Feb 2015, 13:45:22 EST

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