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E3 Journal of Scientific Research

E3 Journal of Scientific Research Vol. 2 (1) pp. 009-015, January 2014; © E3 Journals; ISSN 2276-9919

Analysis of chip formation in machining aluminium hybrid composites

Radhika N1 * , Subramanian R2 , Sajith A1
1 Department of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Amrita Nagar P.O. Ettimadai Coimbatore- 641 112
2 Department of Metallurgical Engineering, PSG College of Technology, Peelamedu, Coimbatore- 641 004
*Corresponding Author E-mail: rcn_kongu@yahoo.co.in
Accepted 12 December 2013

Abstract

Aluminium metal matrix composites are considered to be one of the most difficult to machine materials, because of the presence of reinforcements which are much harder than the parent matrix. This paper focuses on the study of chip formation during the turning of aluminium/alumina/graphite hybrid metal matrix composites and to study the influence of machining conditions, surface roughness and tool wear on the chip geometry. The cutting tool used in the present study was uncoated carbide tip insert. The surface roughness was measured and the results were observed for different machining conditions. Based on the surface roughness value, chips were classified as favorable and unfavorable chips.

Keywords: Hybrid metal matrix composite, machining, surface roughness, chip formation

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