The evolution of homogeneity during processing aluminium alloys by HPT
The evolution of homogeneity during processing aluminium alloys by HPT
Disks of a commercial purity aluminium Al-1050 alloy and Al-1%Mg alloy were processed by high-pressure torsion (HPT) at room temperature for up to a maximum of 5 turns under a pressure of 6 GPa. Following processing, hardness measurements were recorded across the surfaces of the disks. These measurements showed low values of hardness at the center and high values near the edges of the disks and the hardness increased in both alloys with increasing numbers of turns. The evolution of homogeneity in hardness was rapid in Al-1050 compared to the Al-1%Mg alloy. After 5 turns of HPT under a pressure of 6 GPa, the hardness was fully homogeneous across the total surface of the Al-1050 disk whereas there was a region of lower hardness around the center of the Al-1%Mg disk. The results reveal the significant difference between both alloys where the higher rate of recovery in the Al-1050 alloy leads to a rapid evolution of the hardness homogeneity.
277-282
Alhajeri, Saleh N.
4d3f50b6-87ab-4690-87dd-bea08fb1c77f
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Gao, Nong
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
December 2010
Alhajeri, Saleh N.
4d3f50b6-87ab-4690-87dd-bea08fb1c77f
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Gao, Nong
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Alhajeri, Saleh N., Kawasaki, Megumi, Gao, Nong and Langdon, Terence G.
(2010)
The evolution of homogeneity during processing aluminium alloys by HPT.
Materials Science Forum, 667-669, .
(doi:10.4028/www.scientific.net/MSF.667-669.277).
Abstract
Disks of a commercial purity aluminium Al-1050 alloy and Al-1%Mg alloy were processed by high-pressure torsion (HPT) at room temperature for up to a maximum of 5 turns under a pressure of 6 GPa. Following processing, hardness measurements were recorded across the surfaces of the disks. These measurements showed low values of hardness at the center and high values near the edges of the disks and the hardness increased in both alloys with increasing numbers of turns. The evolution of homogeneity in hardness was rapid in Al-1050 compared to the Al-1%Mg alloy. After 5 turns of HPT under a pressure of 6 GPa, the hardness was fully homogeneous across the total surface of the Al-1050 disk whereas there was a region of lower hardness around the center of the Al-1%Mg disk. The results reveal the significant difference between both alloys where the higher rate of recovery in the Al-1050 alloy leads to a rapid evolution of the hardness homogeneity.
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Published date: December 2010
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 170223
URI: http://eprints.soton.ac.uk/id/eprint/170223
ISSN: 1662-9752
PURE UUID: 55f3bf46-2c20-4755-8c74-22300f0887c6
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Date deposited: 04 Jan 2011 14:19
Last modified: 14 Mar 2024 02:47
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Author:
Saleh N. Alhajeri
Author:
Megumi Kawasaki
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