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Evolution of microstructure and precipitation in heat-treatable aluminium alloys during ECA pressing and subsequent heat treatment

Record type: Conference or Workshop Item (Paper)

The precipitation and evolution of microstructure in a spray-cast Al-7034 alloy and a commercial wrought Al-2024 alloy were studied after equal-channel angular pressing (ECAP) using transmission electron microscopy and differential scanning calorimetry (DSC). Microstructural examination showed the grain sizes of both alloys were reduced to the range of ~0.3–0.5 µm through ECAP. The DSC analysis identified the occurrence of thermal effects involving the formation, coarsening, dissolution and melting of the precipitate phases and concurrent recrystallization. The heating and ageing response of the alloys processed by ECAP was identified by micro-hardness testing of the samples after interrupted heating and ageing treatments.

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Citation

Gao, Nong, Starink, Marco J., Furukawa, Minoru, Horita, Zenji, Xu, Cheng and Langdon, Terence G., (2006) Evolution of microstructure and precipitation in heat-treatable aluminium alloys during ECA pressing and subsequent heat treatment Horita, Zenji (ed.) In Nanomaterials by Severe Plastic Deformation. Trans Tech., pp. 275-280.

More information

Published date: 2006
Additional Information: Series ISSN 0255-5476
Venue - Dates: SPD-3: 3rd International Conference on Nanomaterials by Severe Plastic Deformation, 2005-09-21 - 2005-09-26
Keywords: ageing treatment, aluminium alloys, dsc, equal-channel angular pressing

Identifiers

Local EPrints ID: 19166
URI: http://eprints.soton.ac.uk/id/eprint/19166
ISBN: 0878499857
PURE UUID: 55a6fe00-662b-410a-bfbb-60bc3d0ba37a
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 16 Jan 2006
Last modified: 17 Jul 2017 16:33

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Contributors

Author: Nong Gao
Author: Minoru Furukawa
Author: Zenji Horita
Author: Cheng Xu
Editor: Zenji Horita

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