Characterization of dry sliding wear mechanisms of AA5083/B4C metal matrix composite
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Aluminium alloy is known to be a soft material with inadequate hardness, poor wear resistance and good castability; in order to improve its wear resistance, numerous researches have been conducted. This paper deals with the wear mechanisms of aluminium alloy (AA5083) composites reinforced with boron carbide (B4C) particles having 300 mesh size. The fabrication of aluminium metal matrix composite specimen by varying boron carbide in 5%, 10%, 15% and 20% of the weight of aluminium alloy was produced (composite-A, composite-B, composite-C and composite-D, respectively) by the stir-casting technique. The wear mechanisms of the developed metal matrix composites were studied at various parameters such as sliding distance (1000 m, 2000 m and 3000 m), load (30 N, 40 N and 50 N) and sliding velocity (1 m/s, 2 m/s and 3 m/s). The wear mechanisms of the prepared specimen (composites-A, B, C and D) were compared with each other under the same experimental condition on the pin-on-disc wear machine. The major findings in this paper are: the better wear resistance property of the developed metal matrix composites than that of the alloy used as matrix, the wear of composite has been linear and effortless prediction of the wear characteristics by the researchers.
KeywordsAA5083 MMC Composites Stir casting B4C
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