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Comparison of fatigue performance of HVOF spray coated and conventional roll bonded aluminium bearing alloys

Record type: Article

A comparative study on fatigue resistance of thin aluminium bearing linings (supported by harder backing steel layers) produced by high velocity oxyfuel (HVOF) spray coating and conventional roll bonding (RB) processes has shown that the former is superior to the latter with similar lining composition (Al-20%Sn-1%Cu-0.25%Mn) when compared on the basis of oscillating lining surface strains under a three point bend test condition. In terms of the integrity of the multi-layered bearing systems under oscillating stresses, the HVOF lining appeared to show worse fatigue resistance due to a poor/brittle bond between the lining and the backing steel layer resulting in the detachment of the lining from the backing layer. The newly developed RB alloy with reduced Sn content (Al-6.5%Sn-2.5%Si-1%Ni-1%Cu-0.25%Mn) and scattered intermetallics showed higher fatigue resistance than the HVOF and previous RB systems. This was linked to delayed initiation of short cracks leading to a longer overall lifetime compared to all other systems.

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Citation

Ali, M.S., Reed, P.A.S. and Syngellakis, S. (2009) Comparison of fatigue performance of HVOF spray coated and conventional roll bonded aluminium bearing alloys Materials Science and Technology, 25, (5), pp. 75-81.

More information

Published date: 2009
Keywords: Plainbearings, rollbonding (RB), highvelocityoxyfuel (HVOF), fatiguelife, crackinitiation, shortcrack
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 66201
URI: http://eprints.soton.ac.uk/id/eprint/66201
ISSN: 0267-0836
PURE UUID: c03baeff-dfcb-425c-a704-aa89e70f41a6
ORCID for P.A.S. Reed: ORCID iD orcid.org/0000-0002-2258-0347

Catalogue record

Date deposited: 11 May 2009
Last modified: 19 Jul 2017 00:27

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Contributors

Author: M.S. Ali
Author: P.A.S. Reed ORCID iD
Author: S. Syngellakis

University divisions

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