Material characterisation and mechanical properties of Al2O3-Al metal matrix composites |
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| Authors: | B. G. Park A. G. Crosky A. K. Hellier |
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| Affiliation: | (1) Tohoku National Industrial Research Institute, 4-2-1 Nigatake, Miyagino-ku, Sendai, Japan, 938-8551;(2) School of Materials Science and Engineering, The University of New South Wales, Sydney, 2052, Australia;(3) Materials Division, Australian Nuclear Science and Technology Organisation, Private Mail Bag 1, Menai, NSW, 2234, Australia |
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| Abstract: | The mechanical properties of metal matrix composites (MMCs) are critical to their potential application as structural materials. A systematic examination of the effect of particulate volume fraction on the mechanical properties of an Al2O3-Al MMC has been undertaken. The material used was a powder metallurgy processed AA 6061 matrix alloy reinforced with MICRAL-20 , a polycrystalline microsphere reinforcement consisting of a mixture of alumina and mullite. The volume fraction of the reinforcement was varied systematically from 5 to 30% in 5% intervals. The powder metallurgy composites were extruded then heat treated to the T6 condition. Extruded liquid metallurgy processed AA 6061 was used to establish the properties of the unreinforced material. |
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