Microstructural evolution and the mechanical properties of an aluminum alloy processed by high-pressure torsion
Microstructural evolution and the mechanical properties of an aluminum alloy processed by high-pressure torsion
Processing by high-pressure torsion (HPT) was performed on disks of an Al-7075 alloy at room temperature. The alloy was initially annealed at 753 K and then processed by HPT under a pressure of 6.0 GPa up to a maximum of ten turns. Measurements of the Vickers microhardness showed lower values at the centers of the disks after small numbers of turns but higher numbers of turns led to a reasonable hardness homogeneity across each disk. After five turns, the grain size at the edge of the disk was ~250 nm. It is demonstrated that results from mechanical testing are consistent with the hardness and microstructural data.
7789-7795
Sabbaghianrad, Shima
2dbc35ee-f341-42fd-9081-94ef3e9b10b0
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
November 2012
Sabbaghianrad, Shima
2dbc35ee-f341-42fd-9081-94ef3e9b10b0
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Sabbaghianrad, Shima, Kawasaki, Megumi and Langdon, Terence G.
(2012)
Microstructural evolution and the mechanical properties of an aluminum alloy processed by high-pressure torsion.
Journal of Materials Science, 47 (22), .
(doi:10.1007/s10853-012-6524-x).
Abstract
Processing by high-pressure torsion (HPT) was performed on disks of an Al-7075 alloy at room temperature. The alloy was initially annealed at 753 K and then processed by HPT under a pressure of 6.0 GPa up to a maximum of ten turns. Measurements of the Vickers microhardness showed lower values at the centers of the disks after small numbers of turns but higher numbers of turns led to a reasonable hardness homogeneity across each disk. After five turns, the grain size at the edge of the disk was ~250 nm. It is demonstrated that results from mechanical testing are consistent with the hardness and microstructural data.
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Published date: November 2012
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 345693
URI: http://eprints.soton.ac.uk/id/eprint/345693
ISSN: 0022-2461
PURE UUID: b24be772-6aea-48a4-82ed-2c6f09d2c88e
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Date deposited: 28 Nov 2012 11:52
Last modified: 15 Mar 2024 03:13
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Author:
Shima Sabbaghianrad
Author:
Megumi Kawasaki
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