Effect of Al2o3 Particulate Reinforcement in Al6061 Alloy

Abstract
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Acknowledgement
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Article | Open Access

Effect of Al2o3 Particulate Reinforcement in Al6061 Alloy

G.R.C. Pradeep¹*, A. Ramesh² and G.B. Veeresh Kumar³

¹Department of Mechanical Engineering, Sri Venkateswara Institute of Technology, Hampapuram (V), Rapthadu (M), Anantapur (Dist) (India).

²GATES Institute of Technology, Gootyanantapuram (Vill), Gooty, Anantapur, (India).

³Department of Mechanical Engineering, S B M J College of Engngineering, Kanakapura - 562 112 (India).

DOI : http://dx.doi.org/10.13005/msri/060224

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ABSTRACT:

Conventional engineering materials are being continuously replaced by Aluminum Alloys in several industrial applications like Automotive, Marine, Aerospace industries etc., owing to their excellent strength to weight ratio and also being lighter in weight. Further when these Aluminium Alloys are reinforced with hard ceramic particulates their mechanical & wear resistance properties were found to be enhanced. In this paper it was aimed to present the research findings of reinforcing Al2O3 particulates in Al6061 metal matrix composites (MMC) prepared by liquid metallurgy route. 2-6 wt. % of Al2O3 were dispersed in Al6061 in steps of 2. A uniform distribution of the particles in the base matrix alloy was observed during the microstructure studies. The Brinell hardness of the composite was found to increase with the increase in filler content. The tensile strength of the composites was found enhanced at cost of ductility. The wear tests were conducted on a standard pin-on-disc wear testing apparatus. The tests were conducted for a sliding distance of 3KM by varying the load from 10 to 40N in the steps of 10N. The dispersion of Al2O3 in the Al6061 alloy confirmed the enhancement of the mechanical and wear resistant properties.

KEYWORDS:

Al6061; Al2O3; particulates; composites; liquid metallurgy; mechanical properties; wear rate

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