Enhanced tensile ductility of an ultra-fine-grained aluminium alloy

Sabirov, I., Estrin, Y., Barnett, M., Timokhina, I. and Hodgson, P. 2008, Enhanced tensile ductility of an ultra-fine-grained aluminium alloy, Scripta Materialia, vol. 58, no. 3, pp. 163-166, doi: 10.1016/j.scriptamat.2007.09.057.

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Title Enhanced tensile ductility of an ultra-fine-grained aluminium alloy
Author(s) Sabirov, I.
Estrin, Y.
Barnett, M.ORCID iD for Barnett, M. orcid.org/0000-0001-8287-9044
Timokhina, I.ORCID iD for Timokhina, I. orcid.org/0000-0003-1989-0835
Hodgson, P.
Journal name Scripta Materialia
Volume number 58
Issue number 3
Start page 163
End page 166
Total pages 4
Publisher Pergamon
Place of publication Oxford, England
Publication date 2008-02
ISSN 1359-6462
Keyword(s) aluminum alloy
equal-channel angular pressing (ECAP)
shear bands
uniform elongation
strain-rate sensitivity
Summary Aluminum alloy 6082 was subjected to equal-channel angular pressing (ECAP), which resulted in an ultra-fine-grained (UFG) microstructure with an average grain size of 0.2–0.4 μm. There was a pronounced effect of the grain refinement on the strain-rate sensitivity and tensile ductility. The Hart criterion of tensile necking fails to explain the observed ductility of the UFG material at low strain rates. A correlation between the observed stronger-than-expected ductility and a tendency to microshear band formation at low strain rates was established.
Language eng
DOI 10.1016/j.scriptamat.2007.09.057
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 ©2007, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30017296

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