Wear related study on the precipitation hardened Al7075-grey cast iron particulate Reinforced composite

Kini, Achutha U and Hindi, Jamaluddin and Sharma, S S (2019) Wear related study on the precipitation hardened Al7075-grey cast iron particulate Reinforced composite. International Journal of Mechanical and Production, 9 (2). pp. 703-708. ISSN 2249-6890

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Abstract

In this study Al7075 alloy is reinforced with grey cast iron (GCI) particulates using two step stir casting method. The weight percentages of reinforcements were varied in steps of 2wt% from 2-6wt%. The combined effect of reinforcements and precipitation hardening treatment on wear resistance was studied. The wear resistance of the composite was correlated with the base matrix material. The effect of variation in aging temperature on the improvement in wear related properties were studied. The desirable properties were enhanced as the weight percentage of reinforcements increased both in as cast and heat treated condition. The aging process was accelerated due to the presence of articulate reinforcements. The combined effect of GCIp and age hardening at 100ᴼC significantly improves the wear resistance. There is an increase in the number of nucleation sites for the precipitation of finer secondary phase particles due to the presence of reinforcement particulates.

Item Type: Article
Uncontrolled Keywords: Al 7075 Alloy, Composites, Precipitation Hardening & Wear Rate: Peak Hardness
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 27 Mar 2019 06:21
Last Modified: 27 Mar 2019 06:21
URI: http://eprints.manipal.edu/id/eprint/153532

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