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Microstructural evolution in liquid metal processed Al-alloy/SiCp composites

Kumar, NVR and Pai, BC and Dwarakadasa, ES (2003) Microstructural evolution in liquid metal processed Al-alloy/SiCp composites. In: International Journal of Cast Metals Research, 15 (6). pp. 573-579.

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Official URL: http://maney.co.uk/index.php/journals/ijc/


Al-Zn-Mg/SiCP composites processed by a liquid metal processing (stir casting) technique have been microstructurally characterised in the as-cast and extruded conditions. Uniform distribution of SiCP is observed with few defects, such as particle clusters, which are due to partial wetting and associated gas porosity. The constituent particles are associated with SiCP although their composition remains unaffected compared with the control alloy. Hot extrusion of the composite using a shear type die showed banding of particles in the extruded direction with 9 vol.% composite. Such defects however, are not predominant in 18% SiCP extruded composites. The presence Of Mg2Si is detected at the particle matrix interface as well as in the matrix.

Item Type: Journal Article
Publication: International Journal of Cast Metals Research
Publisher: Maney Publishing
Additional Information: Copyright of this article belongs to Maney Publishing.
Keywords: Al-Zn-Mg/SiCp composites;MMCs;stir casting;matrix/particle interface
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 26 Aug 2011 10:23
Last Modified: 26 Aug 2011 10:23
URI: http://eprints.iisc.ac.in/id/eprint/40139

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