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Hot Drilling of Aluminium Matrix Composite

Journal Materials Science Forum (Volume 678)
Volume Advances in Metal Matrix Composites
Edited by Lorella Ceschini and Roberto Montanari
Pages 95-104
DOI 10.4028/www.scientific.net/MSF.678.95
Citation Riccardo Donnini et al., 2011, Materials Science Forum, 678, 95
Online since February, 2011
Authors Riccardo Donnini, Loredana Santo, Vincenzo Tagliaferri
Keywords Al2O3 Reinforcement, Al2009 Aluminium Alloy, Al6061 Aluminium Alloy, Hot Drilling, Metal Matrix Composite (MMC), SiC Reinforcements
Abstract

The aim of this paper is to investigate the behaviour in terms of drilling forces and roughness of Metal Matrix Composites (MMC) in hot drilling machining. In particular, Al2009/(SiC)w, Al6061/(SiC)w, and Al6061(Al2O3)p metal matrix composites were used, and the adopted temperature were in the range 20°C-160°C. A comparison with drilling at room temperature has been discussed. The results have shown the sensible influence of the working temperature on drilling forces and on surface material properties. In the case of Al2009/(SiC)w a minimum in the drilling forces has been found, making possible the dry machining and improving the cutting conditions. Instead, for Al6061/(SiC)W and Al6061(Al2O3)p in the used temperature range no minimum appears.

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