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Development of ultrafine grain aluminium-graphite metal matrix composite by equal channel angular pressing
M. Saravanan, R.M. Pillai, , B.C. Pai, M. Brahmakumar
Published in
Volume: 67
Issue: 6
Pages: 1275 - 1279
Al-5 vol% graphite particulate composite was subjected to equal channel angular pressing (ECAP) at room temperature up to four passes. A significant grain refinement, down to the submicron level of ∼300 nm was achieved. Hardness enhancement of more than two fold was observed with only a marginal difference along the perpendicular and parallel directions of pressing. Further, the strength of the composites was increased by more than two folds. ECAP at room temperature has resulted in a more rapid and significant grain refinement and strengthening in Al-graphite composite. © 2006 Elsevier Ltd. All rights reserved.
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JournalComposites Science and Technology