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Dry sliding wear in high density Fe-2%Ni based P/M alloys

Sudhakar, KV and Sampathkumaran, P and Dwarakadasa, ES (2000) Dry sliding wear in high density Fe-2%Ni based P/M alloys. In: Wear, 242 (1-2). pp. 207-212.

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Abstract

Dry sliding wear behaviour of Fe-2Ni-0.47C (material A) and Fe-2Ni-0.2C (material B) powder metallurgy (P/M) alloys has been studied on a pin-on-disc wear tester using an alloy steel pin and disc of hardness HRC 62. The P/M alloys in the as sintered (similar to 90 HRB) as well as in the hardened and tempered (similar to 30 and similar to 40 HRC) conditions were investigated for their wear behaviour. Wear rate was found to initially decrease and then remain constant with sliding distance in all the materials, it being least for the specimen hardened and tempered to similar to 40 HRC, Optical microscopy was performed to characterise the basic microstructures associated with different heat treatments. SEM observations of the worn surface revealed plastic deformation with delamination of surface layers by subsurface cracks as the mechanism in the as-sintered condition. Microploughing and formation of surface platelets and traces of their detachment was found to be the dominant wear mechanism for the hardened and tempered specimens

Item Type: Journal Article
Additional Information: Copy right of the article belongs to Elsevier Science.
Keywords: Dry sliding wear;PrM steel;Hardness;Heat treatment;Sliding distance;SEM.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 01 Jun 2009 08:51
Last Modified: 19 Sep 2010 04:56
URI: http://eprints.iisc.ernet.in/id/eprint/17221

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