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Role of silicon in resisting subsurface plastic deformation in tribology of aluminium-silicon alloys

Mahato, Anirban and Xia, Shuman and Perry, Tom and Sachdev, Anil and Biswas, SK (2010) Role of silicon in resisting subsurface plastic deformation in tribology of aluminium-silicon alloys. In: Tribology International, 43 (1-2). pp. 381-387.

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Abstract

Silicon particles standing proud on aluminium-silicon alloy surfaces provide protection in tribology. Permanent sinking of such particles into the matrix under load can be deleterious. The mechanical response of the alloy to nano-indentation of single silicon particles embedded in the matrix is explored. A nominal critical pressure required to plastically deform the matrix to permanently embed the particle is determined experimentally. Within a framework suggested by two-dimensional models of plastic response to indentation, a probable correlation is established between the normal mean pressure required to cause permanent sinking of silicon particles and a factor which relates the relevant particle dimensions.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to Elsevier Science.
Keywords: Aluminium-silicon alloy; Silicon particles; Plastic sinking
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 03 Dec 2009 09:10
Last Modified: 19 Sep 2010 05:53
URI: http://eprints.iisc.ernet.in/id/eprint/25044

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