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Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/6157

Title: Processing of aluminum-graphite particulate metal matrix composites by advanced shear technology
Authors: Barekar, NS
Tzamtzis, S
Dhindaw, BK
Patel, J
Babu, NH
Fan, Z
Keywords: Agglomerates
Intensive shearing
Mechanical properties
Metal matrix composites
Particle distribution
Publication Date: 2009
Publisher: Springer Verlag
Citation: Journal of Materials Engineering and Performance, 18(9): 1230 - 1240, Dec 2009
Abstract: To extend the possibilities of using aluminum/graphite composites as structural materials, a novel process is developed. The conventional methods often produce agglomerated structures exhibiting lower strength and ductility. To overcome the cohesive force of the agglomerates, a melt conditioned high-pressure die casting (MC-HPDC) process innovatively adapts the well-established, high-shear dispersive mixing action of a twin screw mechanism. The distribution of particles and properties of composites are quantitatively evaluated. The adopted rheo process significantly improved the distribution of the reinforcement in the matrix with a strong interfacial bond between the two. A good combination of improved ultimate tensile strength (UTS) and tensile elongation (e) is obtained compared with composites produced by conventional processes.
Description: Copyright @ 2009 ASM International. This paper was published in Journal of Materials Engineering and Performance 18(9) and is made available as an electronic reprint with the permission of ASM International. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplications of any material in this paper for a fee or for commercial purposes, or modification of the content of this paper are prohibited.
Sponsorship: EPSRC
URI: http://bura.brunel.ac.uk/handle/2438/6157
DOI: http://dx.doi.org/10.1007/s11665-009-9362-5
ISSN: 1059-9495
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Brunel Centre for Advanced Solidification Technology (BCAST)

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