Site specific SEM/FIB/TEM for analysis of lubricated sliding wear of aluminium alloy composites
Site specific SEM/FIB/TEM for analysis of lubricated sliding wear of aluminium alloy composites
Although extensive research has been undertaken into the dry sliding wear of aluminium alloys, only limited work has been reported on lubricated wear. In this paper, the lubricated sliding wear of some powder derived aluminium alloy composites is reported. Stereo pairs of the worn surface were obtained in the SEM and digitally reconstructed to give an accurate projection of the surface topography. Analysis of the average surface roughness (Ra) along chosen sections provided quantitative information about the wear mechanism. Following this, dual beam focused ion beam (FIB) was undertaken to further explore the features revealed by the SEM surface reconstructions, with TEM sections removed from selected regions. Surface deformation was confined to a narrow layer, typically 1µm thick. Subgrain size within the subsurface layer was comparable to that found in dry sliding wear tests. Reinforcement fracture occurred in the surface particles only. The resultant fragments were often incorporated back into the surface following detachment, such that the total volume fraction reinforcement at the surface was greater than in the bulk. Thus, the dynamic surface topography was a result of three factors: surface deformation, local detachment of reinforcement and re-incorporation of the fragments back into the surface.
327
Walker, J.C.
b300eafd-5b0a-4cf5-86d2-735813b04c6f
Jones, H.
72e80555-02a1-41fe-9a6b-0d7d8b3cd72a
Rainforth, W.M.
b9c1d1e5-ba6b-4856-8b62-03e38688358b
2006
Walker, J.C.
b300eafd-5b0a-4cf5-86d2-735813b04c6f
Jones, H.
72e80555-02a1-41fe-9a6b-0d7d8b3cd72a
Rainforth, W.M.
b9c1d1e5-ba6b-4856-8b62-03e38688358b
Walker, J.C., Jones, H. and Rainforth, W.M.
(2006)
Site specific SEM/FIB/TEM for analysis of lubricated sliding wear of aluminium alloy composites.
Journal of Physics: Conference Series, 26, .
(doi:10.1088/1742-6596/26/1/079).
Abstract
Although extensive research has been undertaken into the dry sliding wear of aluminium alloys, only limited work has been reported on lubricated wear. In this paper, the lubricated sliding wear of some powder derived aluminium alloy composites is reported. Stereo pairs of the worn surface were obtained in the SEM and digitally reconstructed to give an accurate projection of the surface topography. Analysis of the average surface roughness (Ra) along chosen sections provided quantitative information about the wear mechanism. Following this, dual beam focused ion beam (FIB) was undertaken to further explore the features revealed by the SEM surface reconstructions, with TEM sections removed from selected regions. Surface deformation was confined to a narrow layer, typically 1µm thick. Subgrain size within the subsurface layer was comparable to that found in dry sliding wear tests. Reinforcement fracture occurred in the surface particles only. The resultant fragments were often incorporated back into the surface following detachment, such that the total volume fraction reinforcement at the surface was greater than in the bulk. Thus, the dynamic surface topography was a result of three factors: surface deformation, local detachment of reinforcement and re-incorporation of the fragments back into the surface.
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Published date: 2006
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Local EPrints ID: 157741
URI: http://eprints.soton.ac.uk/id/eprint/157741
ISSN: 1742-6588
PURE UUID: e6f3df9e-dfa4-4c2a-abe2-90f77881d8b2
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Date deposited: 22 Jun 2010 14:06
Last modified: 14 Mar 2024 01:48
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Author:
H. Jones
Author:
W.M. Rainforth
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