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The Effect of Thermal Cycling on the Mechanical Properties of the Macro-Interface in Squeeze Cast Composites
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English
Abstract
Selectively reinforced, squeeze cast automotive pistons contain a boundary between the reinforced and unreinforced regions. This boundary is known as the macro-interface. Due to the difference in CTE between the composite and unreinforced matrix, the macro-interface can be the site of residual stress formation during cooling from the casting or heat treatment temperature. Subsequent thermal exposure, particularly thermal cycling, may produce cyclic stress at this interface causing it to experience fatigue. It has been found that matrix precipitates at the macro-interface and the aging behavior of the matrix also may play a role in defining the strength of the macro-interface during thermal cycling conditions.
Citation
O'Connor, M. and Wawner, F., "The Effect of Thermal Cycling on the Mechanical Properties of the Macro-Interface in Squeeze Cast Composites," SAE Technical Paper 940810, 1994, https://doi.org/10.4271/940810.Also In
References
- Soave, R. Ferran G. Joaquim A. C. Sarabanda, J.V.L. “Aluminum Piston Bowl Rim Reinforcement with Ceramic Fibers and Rapidly Solidified Alloys” SAE paper 930185 1993
- Engineered Materials Handbook, Vol. 1, Composites ASM International Metals Park, Ohio 906 907 1987
- Bäckerud, L. Chai, G. Tamminen, J. Solidification Characteristics of Aluminum Alloys, Volume 2, Foundry Alloys ASF / SKANALUMINUM publication Sweden 1990
- Metals Handbook: Ninth Ed., Vol. 15 Casting ASM International Metals Park, Ohio 481 486 1988
- Jorstad, J. L. “Understanding Sludge” SDCE 14th International Die Casting Congress and Exposition paper G-T87-011 1987
- Duncan S. Wawner F. E. 1992