Effect of grain size on the micro-tribological behavior of pure titanium processed by high-pressure torsion
Effect of grain size on the micro-tribological behavior of pure titanium processed by high-pressure torsion
The micro-wear behavior of commercial pure Ti was investigated before and after processing by high pressure torsion (HPT) to provide comparisons over a range of grain sizes. The HPT-processed Ti had an average grain size of ?130 nm while the as-received and HPT plus annealed samples had grain sizes of ?8.6 m and ?607 nm, respectively. The results show all Ti samples have a similar dynamic coef?cient of friction but different wear mechanisms. Wear of the coarse grained (CG) Ti showed extensive plastic deformation and wedge formation which produced large wear debris whereas wear of the ultra-?ne grained (UFG) Ti was dominated by abrasive wear mechanisms and produced small wear debris. In addition, the UFG Ti showed a more homogenous wear grooving and a lower wear rate than CG Ti which suggests that UFG Ti is more suitable for wear applications.
28-35
Wang, Chuan Ting
80ad9adf-a9df-49ed-934d-fa64505b920d
Gao, Nong
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Gee, Mark G
1925d026-bbab-4b30-b52b-1d8e29e34f70
Wood, Robert J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
2012
Wang, Chuan Ting
80ad9adf-a9df-49ed-934d-fa64505b920d
Gao, Nong
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Gee, Mark G
1925d026-bbab-4b30-b52b-1d8e29e34f70
Wood, Robert J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Wang, Chuan Ting, Gao, Nong, Gee, Mark G, Wood, Robert J.K. and Langdon, Terence G.
(2012)
Effect of grain size on the micro-tribological behavior of pure titanium processed by high-pressure torsion.
Wear, 280-281, .
(doi:10.1016/j.wear.2012.01.012).
Abstract
The micro-wear behavior of commercial pure Ti was investigated before and after processing by high pressure torsion (HPT) to provide comparisons over a range of grain sizes. The HPT-processed Ti had an average grain size of ?130 nm while the as-received and HPT plus annealed samples had grain sizes of ?8.6 m and ?607 nm, respectively. The results show all Ti samples have a similar dynamic coef?cient of friction but different wear mechanisms. Wear of the coarse grained (CG) Ti showed extensive plastic deformation and wedge formation which produced large wear debris whereas wear of the ultra-?ne grained (UFG) Ti was dominated by abrasive wear mechanisms and produced small wear debris. In addition, the UFG Ti showed a more homogenous wear grooving and a lower wear rate than CG Ti which suggests that UFG Ti is more suitable for wear applications.
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e-pub ahead of print date: 11 January 2012
Published date: 2012
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 300704
URI: http://eprints.soton.ac.uk/id/eprint/300704
ISSN: 0043-1648
PURE UUID: 3117bcd8-5d3d-406c-8325-94ab2c10f252
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Date deposited: 29 Feb 2012 11:10
Last modified: 15 Mar 2024 03:13
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Author:
Chuan Ting Wang
Author:
Mark G Gee
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