Effect of Ti and B on the dry sliding wear behaviour of hypoeutectic Al‐Si alloys
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.A., Chandrashekharaiah, T.M., Auradi, V. and Kabadi, V.R. (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
Publisher
:Emerald Group Publishing Limited
Copyright © 2008, Emerald Group Publishing Limited