The evolution of homogeneity on longitudinal sections during processing by ECAP
The evolution of homogeneity on longitudinal sections during processing by ECAP
An Al-6061 alloy was processed by equal-channel angular pressing at room temperature for one, two, four and six passes and microhardness measurements were recorded along linear traverses on longitudinal planes in the centers of each billet. The results show the average microhardness increases significantly in the first pass although there is a region of lower hardness running in a band near the bottom surface of the billet. Additional but smaller increases in hardness occur in subsequent passes. The hardness values are distributed homogeneously throughout the longitudinal plane after ECAP through six passes although there remains a very narrow region of lower hardness within a distance of 0.5 mm adjacent to the bottom surface. When combined with earlier microhardness measurements taken on the Al-6061 alloy on the cross-sectional plane, the results confirm the potential for achieving excellent homogeneity after pressing through a total of six passes.
aluminum alloy, equal-channel angular pressing, hardness, homogeneity, severe plastic deformation
449-455
Prell, Michaela
aeb53233-2076-466b-bf55-154651600a51
Xu, Cheng
af526865-aee4-4ef6-8174-def5c38149a2
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
15 May 2008
Prell, Michaela
aeb53233-2076-466b-bf55-154651600a51
Xu, Cheng
af526865-aee4-4ef6-8174-def5c38149a2
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Prell, Michaela, Xu, Cheng and Langdon, Terence G.
(2008)
The evolution of homogeneity on longitudinal sections during processing by ECAP.
Materials Science and Engineering: A, 480 (1-2), .
(doi:10.1016/j.msea.2007.08.011).
Abstract
An Al-6061 alloy was processed by equal-channel angular pressing at room temperature for one, two, four and six passes and microhardness measurements were recorded along linear traverses on longitudinal planes in the centers of each billet. The results show the average microhardness increases significantly in the first pass although there is a region of lower hardness running in a band near the bottom surface of the billet. Additional but smaller increases in hardness occur in subsequent passes. The hardness values are distributed homogeneously throughout the longitudinal plane after ECAP through six passes although there remains a very narrow region of lower hardness within a distance of 0.5 mm adjacent to the bottom surface. When combined with earlier microhardness measurements taken on the Al-6061 alloy on the cross-sectional plane, the results confirm the potential for achieving excellent homogeneity after pressing through a total of six passes.
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Published date: 15 May 2008
Keywords:
aluminum alloy, equal-channel angular pressing, hardness, homogeneity, severe plastic deformation
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 64228
URI: http://eprints.soton.ac.uk/id/eprint/64228
ISSN: 0921-5093
PURE UUID: 99f401ad-cdbb-44d8-a085-8140c405163f
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Date deposited: 17 Dec 2008
Last modified: 16 Mar 2024 03:28
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Author:
Michaela Prell
Author:
Cheng Xu
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