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Equal-channel angular pressing as a production tool for superplastic materials

Record type: Conference or Workshop Item (Paper)

Equal-channel angular pressing (ECAP) was applied for grain refinement of Al-3%Mg0.2%Fe and Al-3%Mg-0.2%Ti alloys and also for a commercial Al 2024 alloy. The grain sizes of the alloys were reduced to similar to0.3 mum. The stability of the fine-grained structures were examined and it was found that the small grains remained stable up to the temperatures of similar to 250 degreesC for the Al-3%Mg-0.2%Fe and Al-3%Mg-0.2%Ti alloys and similar to 400 degreesC for the Al 2024 alloy. Tensile tests revealed maximum elongations of similar to 370% and similar to 180% in the Al-3%Mg0.2%Fe and Al-3%Mg-0.2%Ti alloys, respectively, at a temperature of 250 degreesC with an initial strain rate of 3.3x10(-4) s(-1). There is some evidence for low temperature superplasticity in the Al-3%Mg-0.2%Fe alloy. A maximum elongation of similar to 460% was attained in the Al 2024 alloy at 400 degreesC with an initial strain rate of 10(-3) s(-1). It is demonstrated that the ECAP can be effective in producing superplastic materials.

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Citation

Horita, Z., Lee, S., Ota, S., Neishi, K. and Langdon, T.G., (2001) Equal-channel angular pressing as a production tool for superplastic materials Chandra, Namas (ed.) In Superplasticity in Advanced Materials - ICSAM-2000. Trans Tech., pp. 471-476.

More information

Published date: 2001
Additional Information: Series ISSN 0255-5476
Venue - Dates: International Conference on Superplasticity in Advanced Materials (ICSAM-2000), 2000-08-01 - 2000-08-04

Identifiers

Local EPrints ID: 23462
URI: http://eprints.soton.ac.uk/id/eprint/23462
ISBN: 0878498745
PURE UUID: fdeaa967-a68d-4a20-bdde-b2073cfb1f5e
ORCID for T.G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 23 Mar 2006
Last modified: 17 Jul 2017 16:17

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Contributors

Author: Z. Horita
Author: S. Lee
Author: S. Ota
Author: K. Neishi
Author: T.G. Langdon ORCID iD
Editor: Namas Chandra

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