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The mechanical response of tetragonal zirconia polycrystal to conical indentation

Asif, Syed SA and Biswas, SK (1994) The mechanical response of tetragonal zirconia polycrystal to conical indentation. In: Bulletin of Materials Science, 17 (6). 863-873 .

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Abstract

Blocks of 3Y-TZP were indented with conical diamond indenters. indentation caused tetragonal to monoclinic phase transformation in a subsurface. Of the cracks generated in the subsurface, radial and lateral cracks can be accounted for by a continuum model of the indented subsurface, built using a combination of the Boussinesq and blister stress fields. Additional ring, median and cone cracks were also observed. It is hypothesized that the latter are motivated by the reduction in blister strength or residual energy brought about by the material damage caused by the phase transformation. This damage reduces the load bearing capacity of the material progressively with increasing normal load.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Indian academy of sciences.
Keywords: TZP;conical indentation.
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 15 Apr 2011 08:19
Last Modified: 15 Apr 2011 08:19
URI: http://eprints.iisc.ernet.in/id/eprint/36880

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