Abstract
This research work reports sliding wear performance of graphite reinforced AA6061 alloy composites for rotor drum/disk application in automobiles. The solid lubricant i.e. graphite-particulates of varying weight percentage (0–10 wt%) was used to reinforce AA6061 alloy, fabricated via high vacuum casting method. The sliding wear was simulated experimentally using Taguchi techniques on Pin-on-Disk tribo-tester, with operating conditions viz. applied load (15–55 N), sliding speed (0.5–2.5 m/s) and sliding distance (200–1000 m). Results show improvement in wear resistance of alloy due to the lubricating effect of graphite. Additionally, 7.5 wt% 6061/Gr alloy composite shows superior wear resistance performance under experimental conditions. Surface morphological studies of worn-out surfaces are carried using scanning electron microscope (SEM), in-order-to understand hidden surface wear mechanisms.
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