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Tensile deformation of a ultrafine-grained aluminium alloy: micro shear banding and grain boundary sliding

Sabirov, I., Estrin, Y., Barnett, M., Timokhina, I. and Hodgson, P. 2008, Tensile deformation of a ultrafine-grained aluminium alloy: micro shear banding and grain boundary sliding, Acta Materialia, vol. 56, no. 10, pp. 2223-2230, doi: 10.1016/j.actamat.2008.01.020.

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Title Tensile deformation of a ultrafine-grained aluminium alloy: micro shear banding and grain boundary sliding
Author(s) Sabirov, I.
Estrin, Y.
Barnett, M.
Timokhina, I.
Hodgson, P.
Journal name Acta Materialia
Volume number 56
Issue number 10
Start page 2223
End page 2230
Total pages 8
Publisher Pergamon
Place of publication Oxford, England
Publication date 2008-06
ISSN 1359-6454
1873-2453
Keyword(s) aluminium alloy
equal channel angular pressing
uniform elongation
shear bands
grain boundary sliding
Summary This work investigates the relationship between the strain rate and the ductility and the underlying deformation mechanisms in an ultrafine-grained Al6082 alloy. At room temperature the uniform elongation of the material exhibits a marked increase with decreasing strain rate. This effect is related to the activation of micro shear banding, which is controlled by grain boundary sliding. The contribution of these mechanisms to uniform elongation is estimated. It is proposed that the grain boundary sliding suppresses the transformation of micro shear bands into macro shear bands. The activity of other deformation mechanisms during plastic deformation of the ultrafine-grained material is also discussed.
Language eng
DOI 10.1016/j.actamat.2008.01.020
Field of Research 091207 Metals and Alloy Materials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2008
Copyright notice ©2008, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30017600

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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