Achieving exceptional superplasticity in a bulk aluminum alloy processed by high-pressure torsion
Achieving exceptional superplasticity in a bulk aluminum alloy processed by high-pressure torsion
Bulk specimens of an aluminum–magnesium–scandium alloy, in the form of small cylinders, were processed by high-pressure torsion at room temperature. Following processing, the microstructure was inhomogeneous with larger grains in the center and ultrafine grains of 130 nm at the periphery. Tensile testing after processing revealed the potential for achieving exceptional superplastic elongations but the measured elongations depended upon the positions of the specimens within the cylinder. The highest tensile elongation recorded in these experiments was 1600%.
aluminum alloy, high-pressure torsion, severe plastic deformation, superplasticity
1029-1032
Horita, Zenji
011521b8-3b29-494b-bf3f-346827ddbcce
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
June 2008
Horita, Zenji
011521b8-3b29-494b-bf3f-346827ddbcce
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Horita, Zenji and Langdon, Terence G.
(2008)
Achieving exceptional superplasticity in a bulk aluminum alloy processed by high-pressure torsion.
Scripta Materialia, 58 (11), .
(doi:10.1016/j.scriptamat.2008.01.043).
Abstract
Bulk specimens of an aluminum–magnesium–scandium alloy, in the form of small cylinders, were processed by high-pressure torsion at room temperature. Following processing, the microstructure was inhomogeneous with larger grains in the center and ultrafine grains of 130 nm at the periphery. Tensile testing after processing revealed the potential for achieving exceptional superplastic elongations but the measured elongations depended upon the positions of the specimens within the cylinder. The highest tensile elongation recorded in these experiments was 1600%.
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Published date: June 2008
Keywords:
aluminum alloy, high-pressure torsion, severe plastic deformation, superplasticity
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 64227
URI: http://eprints.soton.ac.uk/id/eprint/64227
ISSN: 1359-6462
PURE UUID: 629f6318-22ef-4bfe-a6b2-f1ca315e1740
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Date deposited: 17 Dec 2008
Last modified: 16 Mar 2024 03:28
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Author:
Zenji Horita
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