# Dry sliding wear of fly ash particle reinforced A356 Al composites

Sudarshan, * and Surappa, MK (2008) Dry sliding wear of fly ash particle reinforced A356 Al composites. In: Wear, 265 (3-4). pp. 349-360.

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## Abstract

In the present study aluminium alloy (A356) composites containing 6 and 12 vol. % of fly ash particles have been fabricated. The dry sliding wear behaviour of unreinforced alloy and composites are studied using Pin-On-Disc machine at a load of 10, 20, 50, 65 and 80N at a constant sliding velocity of 1 m/s. Results show that the dry sliding wear resistance of Al-fly ash composite is almost similar to that of $Al_2O_3$ and SiC reinforced Al-alloy. Composites exhibit better wear resistance compared to unreinforced alloy up to a load of 80 N. Fly ash particle size and its volume fraction significantly affect the wear and friction properties of composites. Microscopic examination of the worn surfaces, subsurfaces and debris has been done. At high loads (>50 N), where fly ash particles act as load bearing constituents, the wear resistance of A356 Al alloy reinforced with narrow size range $(53-106 \mu m)$ fly ash particles were superior to that of the composite having the same volume fraction of particles in the wide size range $(0.5-400 \mu m)$.

Item Type: Journal Article Copyright of this article belongs to Elsevier. Fly ash;Dry sliding;Pin-on-disc;Wear debris. Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) 10 Jul 2008 19 Sep 2010 04:47 http://eprints.iisc.ernet.in/id/eprint/14917