Microstructural evolution in commercial purity aluminum during high-pressure torsion
Microstructural evolution in commercial purity aluminum during high-pressure torsion
An investigation was conducted to evaluate the microstructural evolution occurring in disks of commercial purity aluminum processed by high-pressure torsion (HPT) under constrained conditions. Microhardness measurements were taken to assess the variation in hardness across the diameters of disks subjected to different imposed strains and the microstructures were observed at the edges and in the centers of the disks using transmission electron microscopy. The results show the microhardness is lower and there is less grain refinement in the central regions of the disks in the initial stages of torsional straining but the microstructures become reasonably homogeneous across the disks at high imposed strains.
aluminum, high-pressure torsion (hpt), microstructure, ultrafine grains
277-280
Zhilyaev, A.P.
fe22cdc1-590d-4bbd-bd1a-6ca18e3ee971
Oh-ishi, K.
35ea2a6a-7c9d-470e-b443-53b60e41dc62
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
McNelley, T.R.
86e07e47-8710-46a6-bbe9-b34bcd66383b
2005
Zhilyaev, A.P.
fe22cdc1-590d-4bbd-bd1a-6ca18e3ee971
Oh-ishi, K.
35ea2a6a-7c9d-470e-b443-53b60e41dc62
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
McNelley, T.R.
86e07e47-8710-46a6-bbe9-b34bcd66383b
Zhilyaev, A.P., Oh-ishi, K., Langdon, T.G. and McNelley, T.R.
(2005)
Microstructural evolution in commercial purity aluminum during high-pressure torsion.
Materials Science and Engineering: A, 410-411, .
(doi:10.1016/j.msea.2005.08.044).
Abstract
An investigation was conducted to evaluate the microstructural evolution occurring in disks of commercial purity aluminum processed by high-pressure torsion (HPT) under constrained conditions. Microhardness measurements were taken to assess the variation in hardness across the diameters of disks subjected to different imposed strains and the microstructures were observed at the edges and in the centers of the disks using transmission electron microscopy. The results show the microhardness is lower and there is less grain refinement in the central regions of the disks in the initial stages of torsional straining but the microstructures become reasonably homogeneous across the disks at high imposed strains.
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More information
Published date: 2005
Additional Information:
The Langdon Symposium: Flow and forming of Crystalline Materials
Keywords:
aluminum, high-pressure torsion (hpt), microstructure, ultrafine grains
Organisations:
Engineering Sciences
Identifiers
Local EPrints ID: 23847
URI: http://eprints.soton.ac.uk/id/eprint/23847
ISSN: 0921-5093
PURE UUID: 4222d713-c0ab-4b2e-81e9-21baa93bf0e6
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Date deposited: 22 Mar 2006
Last modified: 16 Mar 2024 03:28
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Contributors
Author:
A.P. Zhilyaev
Author:
K. Oh-ishi
Author:
T.R. McNelley
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