The Effect of Thermal Cycling on the Mechanical Properties of the Macro-Interface in Squeeze Cast Composites 940810
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. Download Citation
Author(s):
Michael J. O'Connor, F. E. Wawner
Affiliated:
University of Virginia
Pages: 8
Event:
International Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Metal Matrix Composites-SP-1010
Related Topics:
Heat treatment
Casting
Pistons
Composite materials
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