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Enhanced superplasticity of magnesium alloy AZ31 obtained through equal-channel angular pressing with back-pressure

Lapovok, R., Estrin, Y., Popov, M. V., Rundell, S. and Williams, T. 2008, Enhanced superplasticity of magnesium alloy AZ31 obtained through equal-channel angular pressing with back-pressure, Journal of materials science, vol. 43, pp. 7372-7378, doi: 10.1007/s10853-008-2685-z.

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Title Enhanced superplasticity of magnesium alloy AZ31 obtained through equal-channel angular pressing with back-pressure
Author(s) Lapovok, R.
Estrin, Y.
Popov, M. V.
Rundell, S.
Williams, T.
Journal name Journal of materials science
Volume number 43
Start page 7372
End page 7378
Total pages 7
Publisher Springer
Place of publication Berlin, Germany
Publication date 2008-12
ISSN 0022-2461
1573-4803
Keyword(s) ECAP
superplastic elongations
back-pressure
bimodal grain structure
Summary Excellent superplastic elongations (in excess of 1,200%) were achieved in a commercial cast AZ31 alloy processed by low temperature equal-channel angular pressing (ECAP) with a back-pressure to produce a bimodal grain structure. In contrast, AZ31 alloy processed by ECAP at temperatures higher than 200 °C showed a reasonably uniform grain structure and relatively low ductility. It is suggested that a bimodal grain structure is advantageous because the larger grains contribute to strain hardening thus delaying the onset of necking, while grain boundary sliding associated with small grains provides a stabilizing effect due to enhanced strain rate sensitivity. © 2008 Springer Science+Business Media, LLC.
Language eng
DOI 10.1007/s10853-008-2685-z
Field of Research 091207 Metals and Alloy Materials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2008, Springer Science+Business Media, LLC
Persistent URL http://hdl.handle.net/10536/DRO/DU:30075995

Document type: Journal Article
Collection: Institute for Frontier Materials
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