Effect of Ti and B on the dry sliding wear behaviour of hypoeutectic Al‐Si alloys

S.A. Kori (Department of Mechanical Engineering, R&D Centre, Basaveshwar Engineering College, Bagalkot, India)
T.M. Chandrashekharaiah (Department of Industrial and Production Engineering, R&D Centre, Basaveshwar Engineering College, Bagalkot, India)
V. Auradi (Department of Mechanical Engineering, R&D Centre, Basaveshwar Engineering College, Bagalkot, India)
V.R. Kabadi (Department of Mechanical Engineering, R&D Centre, Basaveshwar Engineering College, Bagalkot, India)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Publication date: 8 February 2008

Abstract

Purpose

This paper aims to study the effect of Al‐Ti‐B grain refiners on the wear behaviour of hypoeutectic (Al‐0.2, 2, 3, 4, 5 and 7Si alloys) Al‐Si alloys against steel counterface using a Pin‐On‐Disc machine under dry sliding conditions.

Design/methodology/approach

In the present study, Al‐5Ti‐1B and Al‐1Ti‐3B grain refiners were used for the refinement of α‐Al dendrites in hypoeutectic Al‐Si alloys. Various parameters such as alloy composition, normal pressure, sliding speed and sliding distance were studied on Al‐Si alloys. Worn surfaces were characterized by SEM/EDX microanalysis.

Findings

Wear resistance of hypoeutectic Al‐Si alloys increases with the addition of Al‐Ti‐B refiners when compared with the absence of grain refiner.

Research limitations/implications

The effects of normal pressure, sliding speed and sliding distance were studied by varying one parameter and keeping constant the other two parameters.

Originality/value

This paper provides information on improvement in wear properties of Al‐Si alloys by the addition of Al‐Ti‐B grain refiners. The effects of silicon and grain refiners containing Ti/B play a vital role and are responsible for the wear resistance of the alloys, which helps the industrialists in manufacturing Al‐Si alloy components.

Keywords

Citation

Kori, S., Chandrashekharaiah, T., Auradi, V. and Kabadi, V. (2008), "Effect of Ti and B on the dry sliding wear behaviour of hypoeutectic Al‐Si alloys", Industrial Lubrication and Tribology, Vol. 60 No. 1, pp. 46-55. https://doi.org/10.1108/00368790810839936

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Publisher

:

Emerald Group Publishing Limited

Copyright © 2008, Emerald Group Publishing Limited

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