Microstructural influences on fatigue crack initiation and early growth behaviour in plain bearing Al-based linings
Microstructural influences on fatigue crack initiation and early growth behaviour in plain bearing Al-based linings
Fatigue initiation and subsequent short and long crack growth has been investigated in an typical automotive bearing system, focussing on the behaviour of the aluminium-tin-silicon lining material. Crack initiation appears to be associated with decohesion of the interface between the primary, globular silicon and the aluminium matrix. Short crack growth, and crack growth at low Delta K levels in the long crack case, appears to be tortuous and highly microstructurally dependent, deviating towards secondary phase/matrix interfaces. At higher Delta K levels crack growth occurs principally through the aluminium matrix, and classical striations are seen. Multiple crack initiation is seen in the multiphase bearing lining material and crack coalescence gives rise to the dominant crack. Uncoalesced cracks appear to arrest at a "critical" surface crack length, whose dimension has been linked to sub-surface crack deflection within the lining material once the crack reaches the steel backing.
Al-bearing alloys, fatigue
0878498532
1445-1450
Trans Tech Publications Ltd
Joyce, M.R.
e294d1ba-c37a-4149-b9c0-15095d643d3b
Syngellakis, S.
1279f4e2-97ec-44dc-b4c2-28f5ac9c2f88
Reed, P.A.S.
8b79d87f-3288-4167-bcfc-c1de4b93ce17
2000
Joyce, M.R.
e294d1ba-c37a-4149-b9c0-15095d643d3b
Syngellakis, S.
1279f4e2-97ec-44dc-b4c2-28f5ac9c2f88
Reed, P.A.S.
8b79d87f-3288-4167-bcfc-c1de4b93ce17
Joyce, M.R., Syngellakis, S. and Reed, P.A.S.
(2000)
Microstructural influences on fatigue crack initiation and early growth behaviour in plain bearing Al-based linings.
Starke, Jr., E.A., Sanders, Jr., T.H. and Cassada, W.A.
(eds.)
In Aluminium Alloys: Their Physical and Mechanical Properties.
vol. 331-337,
Trans Tech Publications Ltd.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Fatigue initiation and subsequent short and long crack growth has been investigated in an typical automotive bearing system, focussing on the behaviour of the aluminium-tin-silicon lining material. Crack initiation appears to be associated with decohesion of the interface between the primary, globular silicon and the aluminium matrix. Short crack growth, and crack growth at low Delta K levels in the long crack case, appears to be tortuous and highly microstructurally dependent, deviating towards secondary phase/matrix interfaces. At higher Delta K levels crack growth occurs principally through the aluminium matrix, and classical striations are seen. Multiple crack initiation is seen in the multiphase bearing lining material and crack coalescence gives rise to the dominant crack. Uncoalesced cracks appear to arrest at a "critical" surface crack length, whose dimension has been linked to sub-surface crack deflection within the lining material once the crack reaches the steel backing.
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More information
Published date: 2000
Additional Information:
Series ISSN 0255-5476
Venue - Dates:
7th International Conference ICAA7, Charlottesville, Virginia, 2000-04-09 - 2000-04-14
Keywords:
Al-bearing alloys, fatigue
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 43069
URI: http://eprints.soton.ac.uk/id/eprint/43069
ISBN: 0878498532
ISSN: 0255-5476
PURE UUID: d54ee102-3691-4829-b353-f428fed20dfd
Catalogue record
Date deposited: 10 Jan 2007
Last modified: 08 Dec 2023 02:33
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Contributors
Author:
M.R. Joyce
Author:
S. Syngellakis
Editor:
E.A. Starke, Jr.
Editor:
T.H. Sanders, Jr.
Editor:
W.A. Cassada
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