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A study of microstructure and wear behaviour of TiB2/Al metal matrix composites

Sreenivasan, A and Vizhian, Paul S and Shivakumar, ND and Muniraju, M and Raguraman, M (2011) A study of microstructure and wear behaviour of TiB2/Al metal matrix composites. In: Latin American Journal of Solids and Structures, 8 (1). pp. 1-8.

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Abstract

The present paper deals with the study of microstructure and wear characteristics of TiB2 reinforced aluminium metal matrix composites (MMCs). Matrix alloys with 5, 10 and 15% of TiB2 were made using stir casting technique. Effect of sliding velocity on the wear behaviour and tribo-chemistry of the worn surfaces of both matrix and composites sliding against a EN24 steel disc has been investigated under dry conditions. A pin-on-disc wear testing machine was used to find the wear rate, in which EN24 steel disc was used as the counter face, loads of 10-60N in steps of 10N and speeds of 100, 200, 300, 400 and 500 rpm were employed. The results showed that the wear rate was increased with an increase in load and sliding speed for both the materials. However, a lower wear rate was obtained for MMCs when compared to the matrix alloys. The wear transition from slight to severe was presented at the critical applied loads. The transition loads for the MMCs were much higher than that of the matrix alloy. The transition loads were increased with increase in TiB2 and the same was decreased with the increase of sliding speeds. The SEM and EDS analyses were undertaken to demonstrate the effect of TiB2 particles on the wear mechanism for each conditions.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Latin Amer J Solids Structures.
Keywords: MMC composites;wear;microstructure
Department/Centre: Division of Mechanical Sciences > Centre for Product Design & Manufacturing
Date Deposited: 15 Apr 2011 06:13
Last Modified: 15 Apr 2011 06:13
URI: http://eprints.iisc.ernet.in/id/eprint/36733

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