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New Aluminum Piston Alloy with Increased Fatigue Strength at High Temperatures
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English
Abstract
A new piston alloy was developed by combining the chemical compositions of copper and silicon rich aluminum alloys. Copper increases fatigue strength at low and intermediate temperatures of up to 250 °C whereas the increased amount of intermetallics raises fatigue strength at high temperature of 340 °C or beyond.
Casting difficulties can be handled by grain refinement of the α-aluminum. Engine tests show an increase of the lifetime of the thermally and mechanically highly loaded bowl rims of DI-Diesel pistons by a factor of four.
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Citation
Mielke*, ., Steffens, ., Beer, ., and Henning, ., "New Aluminum Piston Alloy with Increased Fatigue Strength at High Temperatures," SAE Technical Paper 980687, 1998, https://doi.org/10.4271/980687.Also In
References
- Mondolfo L. F. 1976 Aluminium Alloys: Structure and Properties Butterworth & Co. Ltd. London 759
- Aluminium-Taschenbuch Aluminium-Verlag Düsseldorf 1988 385
- Kamp H. Ernstberger S. Piston Technology for Passenger- Car Gasoline Engines 1997
- Pfestorf H. Kamp H. Piston Technology for Passenger Car Diesel Engines 1997