Hardness homogeneity on longitudinal and transverse sections
of an aluminum alloy processed by ECAP
Hardness homogeneity on longitudinal and transverse sections
of an aluminum alloy processed by ECAP
Billets of a commercial-purity aluminum Al-1050 alloy were processed by equal-channel angular pressing (ECAP) at room temperature for up to six passes and microhardness measurements were recorded on the longitudinal and cross-sectional planes of each billet. Large numbers of datum points were recorded in order to minimize the errors in the results. The measurements show the hardness increases significantly after the first pass and then increases by very small amounts in subsequent passes. There are regions of lower hardness running in bands near the top and bottom surfaces of each billet. With increasing numbers of passes, the lower hardness region near the top surface disappears and the region near the lower surface remains in place but becomes less extensive. Neglecting the very small region of lower hardness near the bottom surface, the results show there is a potential for achieving excellent three-dimensional homogeneity after six passes of ECAP.
3833-3840
Alhajeri, Saleh N.
4d3f50b6-87ab-4690-87dd-bea08fb1c77f
Gao, Nong
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
25 April 2011
Alhajeri, Saleh N.
4d3f50b6-87ab-4690-87dd-bea08fb1c77f
Gao, Nong
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Alhajeri, Saleh N., Gao, Nong and Langdon, Terence G.
(2011)
Hardness homogeneity on longitudinal and transverse sections
of an aluminum alloy processed by ECAP.
Materials Science and Engineering: A, 528 (10-11), .
(doi:10.1016/j.msea.2011.01.074).
Abstract
Billets of a commercial-purity aluminum Al-1050 alloy were processed by equal-channel angular pressing (ECAP) at room temperature for up to six passes and microhardness measurements were recorded on the longitudinal and cross-sectional planes of each billet. Large numbers of datum points were recorded in order to minimize the errors in the results. The measurements show the hardness increases significantly after the first pass and then increases by very small amounts in subsequent passes. There are regions of lower hardness running in bands near the top and bottom surfaces of each billet. With increasing numbers of passes, the lower hardness region near the top surface disappears and the region near the lower surface remains in place but becomes less extensive. Neglecting the very small region of lower hardness near the bottom surface, the results show there is a potential for achieving excellent three-dimensional homogeneity after six passes of ECAP.
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Published date: 25 April 2011
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 179551
URI: http://eprints.soton.ac.uk/id/eprint/179551
ISSN: 0921-5093
PURE UUID: 34682642-9a3c-4720-aa52-ffafd4e7e7a8
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Date deposited: 04 Apr 2011 08:55
Last modified: 15 Mar 2024 03:13
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Author:
Saleh N. Alhajeri
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