Wear resistance of an ultrafine-grained Cu-Zr alloy processed by equal-channel angular pressing
Wear resistance of an ultrafine-grained Cu-Zr alloy processed by equal-channel angular pressing
A Cu-0.1 wt.% Zr alloy was processed by equal-channel angular pressing (ECAP) through 8 passes at room temperature to produce an ultrafine grain size of ~350 nm with an average Vickers microindentation hardness (200 gf) of ~140. Ball-on-disc dry sliding tests were conducted on an annealed material and on the ECAP-processed alloy using applied normal loads from 1 to 15 N. The coefficient of friction (COF), surface topography and wear volume loss were examined to evaluate the micro-wear resistance. The results show that samples processed by ECAP have lower average values for the COF than the unprocessed alloy and there is also a decrease in the wear depth and wear volume loss with increasing numbers of ECAP passes. The ultrafine-grained alloy processed by ECAP has a higher wear resistance than the annealed and unprocessed material due to the significant grain refinement and improved mechanical properties.
copper alloy, equal-channel angular pressing, micro-wear, dry sliding tribology, wear property
10-19
Li, Jianwei
299f1c63-8058-414b-afd1-c5c9a6a13762
Wongsa-Ngam, Jittraporn
3a196159-d8e5-4658-a47b-a6f6c5a7dcc7
Xu, Jie
593871b5-a17a-4e0f-ae0e-7e48b1aadd99
Shan, Debin
fd8652eb-1eeb-4ae2-bcc4-102320f3c2d7
Guo, Bin
6454155d-fa5f-480b-8747-88d06498a923
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
15 March 2015
Li, Jianwei
299f1c63-8058-414b-afd1-c5c9a6a13762
Wongsa-Ngam, Jittraporn
3a196159-d8e5-4658-a47b-a6f6c5a7dcc7
Xu, Jie
593871b5-a17a-4e0f-ae0e-7e48b1aadd99
Shan, Debin
fd8652eb-1eeb-4ae2-bcc4-102320f3c2d7
Guo, Bin
6454155d-fa5f-480b-8747-88d06498a923
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Li, Jianwei, Wongsa-Ngam, Jittraporn, Xu, Jie, Shan, Debin, Guo, Bin and Langdon, Terence G.
(2015)
Wear resistance of an ultrafine-grained Cu-Zr alloy processed by equal-channel angular pressing.
Wear, 326-327, .
(doi:10.1016/j.wear.2014.12.022).
Abstract
A Cu-0.1 wt.% Zr alloy was processed by equal-channel angular pressing (ECAP) through 8 passes at room temperature to produce an ultrafine grain size of ~350 nm with an average Vickers microindentation hardness (200 gf) of ~140. Ball-on-disc dry sliding tests were conducted on an annealed material and on the ECAP-processed alloy using applied normal loads from 1 to 15 N. The coefficient of friction (COF), surface topography and wear volume loss were examined to evaluate the micro-wear resistance. The results show that samples processed by ECAP have lower average values for the COF than the unprocessed alloy and there is also a decrease in the wear depth and wear volume loss with increasing numbers of ECAP passes. The ultrafine-grained alloy processed by ECAP has a higher wear resistance than the annealed and unprocessed material due to the significant grain refinement and improved mechanical properties.
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More information
Accepted/In Press date: 13 December 2014
e-pub ahead of print date: 19 December 2014
Published date: 15 March 2015
Keywords:
copper alloy, equal-channel angular pressing, micro-wear, dry sliding tribology, wear property
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 377263
URI: http://eprints.soton.ac.uk/id/eprint/377263
ISSN: 0043-1648
PURE UUID: 3bfd83ee-3a69-408a-9bbd-a063a48d8b3d
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Date deposited: 20 May 2015 15:31
Last modified: 15 Mar 2024 03:14
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Author:
Jianwei Li
Author:
Jittraporn Wongsa-Ngam
Author:
Jie Xu
Author:
Debin Shan
Author:
Bin Guo
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