Elevated temperature fatigue of Al-Si piston alloys
Elevated temperature fatigue of Al-Si piston alloys
Long crack fatigue tests were carried out on two cast Al-Si alloys used in the manufacture of pistons for small automotive engines. These were performed at a frequency of 15Hz at room temperature, 200 degreesC and 350 degreesC, in addition further tests were performed at 50Hz at the highest temperature. The fatigue performance of both alloys was found to improve with increasing temperature. This was linked to a change in fatigue crack propagation mechanism in both alloys with respect to the primary Si phase. It was seen that the transition between a given Si phase decohering or fracturing ahead of a fatigue crack occurred at a temperature and strain rate dependent critical stress intensity factor. The relation between critical stress intensity factor, temperature and strain rate differentiated the two materials studied.
long fatigue crack growth, micro-mechanisms, Al-Si alloy, high temperature
0878498990
1261-1266
Trans Tech Publications Ltd
Joyce, M.R.
e294d1ba-c37a-4149-b9c0-15095d643d3b
Styles, C.M.
3e0c9b1c-4126-40f5-abfa-808e1f81b086
Reed, P.A.S.
8b79d87f-3288-4167-bcfc-c1de4b93ce17
2002
Joyce, M.R.
e294d1ba-c37a-4149-b9c0-15095d643d3b
Styles, C.M.
3e0c9b1c-4126-40f5-abfa-808e1f81b086
Reed, P.A.S.
8b79d87f-3288-4167-bcfc-c1de4b93ce17
Joyce, M.R., Styles, C.M. and Reed, P.A.S.
(2002)
Elevated temperature fatigue of Al-Si piston alloys.
Gregson, P.J. and Harris, S.
(eds.)
In Aluminium Alloys 2002: Their Physical and Mechanical Properties.
Trans Tech Publications Ltd.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Long crack fatigue tests were carried out on two cast Al-Si alloys used in the manufacture of pistons for small automotive engines. These were performed at a frequency of 15Hz at room temperature, 200 degreesC and 350 degreesC, in addition further tests were performed at 50Hz at the highest temperature. The fatigue performance of both alloys was found to improve with increasing temperature. This was linked to a change in fatigue crack propagation mechanism in both alloys with respect to the primary Si phase. It was seen that the transition between a given Si phase decohering or fracturing ahead of a fatigue crack occurred at a temperature and strain rate dependent critical stress intensity factor. The relation between critical stress intensity factor, temperature and strain rate differentiated the two materials studied.
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More information
Published date: 2002
Additional Information:
Series ISSN 0255-5476
Venue - Dates:
8th International Conference ICAA8, Cambridge, UK, 2002-07-02 - 2002-07-05
Keywords:
long fatigue crack growth, micro-mechanisms, Al-Si alloy, high temperature
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 43073
URI: http://eprints.soton.ac.uk/id/eprint/43073
ISBN: 0878498990
ISSN: 0255-5476
PURE UUID: c475bf62-1d19-42d0-92e3-4afe8524b479
Catalogue record
Date deposited: 10 Jan 2007
Last modified: 08 Dec 2023 02:33
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Contributors
Author:
M.R. Joyce
Author:
C.M. Styles
Editor:
P.J. Gregson
Editor:
S. Harris
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