Tribology and surface topography of tri-aluminide reinforced composites. (May 2016)

• Record Type: Journal Article
• Authors: Gautam, G.; Kumar, N.; Mohan, A.; Gautam, R.K.; Mohan, S.
• Is Part Of: Tribology international. Volume 97(2016)
• Page Start: 49
• Page End: 58
• Publication Date: 2016-05
• Subjects: Composite -- Microscopy -- Wear -- Friction; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2016.01.014
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: Al-2.26% Mg alloy reinforced with Al3 Zr particles was synthesised by Direct Melt Reaction in situ technique. Wear rate, wear rate/vol% Al3 Zr (normalised with respect to amount of Al3 Zr), normalised wear, and wear coefficient have been evaluated. At different combinations of normal load and sliding velocity two modes of wear i.e. mild/oxidative and severe/oxidative-metallic modes are observed. With increase in the amount of high hardness Al3 Zr particles, composites can be used even at higher load and sliding velocity while still being in mild wear regime. Coefficient of friction (COF) has fluctuating tendency with sliding distance. COF shows a decreasing trend with load, whereas, with sliding velocity and composition trend is reversed. Low wear and high COF indicates its suitability in brake materials. Highlights: Al-rich grains are refined on incorporation of Al3 Zr particles. In situ Al3 ZrAl-2.26%Mg. Low wear of Al3 Zr/Al-2.26% Mg composites indicate brake material.