Abstract
The dry sliding wear behavior of Al 2219 alloy and Al 2219/SiCp/Gr hybrid composites are investigated under similar conditions. The composites are fabricated using the liquid metallurgy technique. The dry sliding wear test is carried out for sliding speeds up to 6 m/s and for normal loads up to 60 N using a pin on disc apparatus. It is found that the addition of SiCp and graphite reinforcements increases the wear resistance of the composites. The wear rate decreases with the increase in SiCp reinforcement content. As speed increases, the wear rate decreases initially and then increases. The wear rate increases with the increase in load. Scanning electron microscopy micrographs of the worn surface are used to predict the nature of the wear mechanism. Abrasion is the principle wear mechanism for the composites at low sliding speeds and loads. At higher loads, the wear mechanism changes to delamination.
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Basavarajappa, S., Chandramohan, G., Mukund, K. et al. Dry sliding wear behavior of Al 2219/SiCp-Gr hybrid metal matrix composites. J. of Materi Eng and Perform 15, 668–674 (2006). https://doi.org/10.1361/105994906X150803
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DOI: https://doi.org/10.1361/105994906X150803