ASSESSMENT OF THE DENSITY AND MECHANICAL PROPERTIES OF PARTICULATE PERIWINKLE SHELL-ALUMINIUM 6063 METAL MATRIX COMPOSITE (PPS-ALMMC) PRODUCED BY TWO-STEP CASTING

This work investigated the density, porosity, some mechanical properties and microstructure of PPS-AlMMC and compared the properties of the composites and those of the aluminium 6063 (Al60603) alloy. Periwinkle shells were milled to particle sizes of 75gm and 150gm and used to produce PPS-AlMMC at 1...

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Bibliographic Details
Published in:Acta Technica Corvininesis 2017-01, Vol.10 (1), p.83
Main Authors: Umunakwe, R, Olaleye, D J, Oyetunji, A, Okoye, O C, Umunakwe, I J
Format: Article
Language:English
Subjects:
Alloys
Composite materials
Ductility
Impact strength
Particle size
Powder metallurgy
Researchers
Rice
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Summary:This work investigated the density, porosity, some mechanical properties and microstructure of PPS-AlMMC and compared the properties of the composites and those of the aluminium 6063 (Al60603) alloy. Periwinkle shells were milled to particle sizes of 75gm and 150gm and used to produce PPS-AlMMC at 1,5,10 and 15wt% filler loadings using two-step casting technique. The density, porosity, mechanical properties and microstructure of the composite materials were compared with those of the Al6063 alloy. The addition of PPS to aluminium alloy reduced the density of the composite. It was observed that the filler distributes uniformly in the matrix due to the two-step casting technique. The porosities of the composites were within acceptable level of 0-5% except for the composite with 15wt% PPS of 150gm particle size. Improved strength, ductility, hardness and modulus were obtained when the filler was used to reinforce the alloy. However, using a filler of higher particle size resulted to higher porosity, reduced tensile strength, ductility and toughness.
ISSN:2067-3809