Original scientific paper
Study of Influence of Aluminium Content on Machinability of Magnesium Alloys
Nikola TOMAC
; Faculty of Maritime studies, University of Rijeka, Rijeka, Croatia
Kjell TØNNESSEN
; University of Trondheim, Department of Production Engineering, and SINTEF Production Engineering, Trondheim, Norway
Tonči MIKAC
; Faculty of Engineering, University of Rijeka, Rijeka, Croatia
Abstract
This paper describes an experimental investigation on the formation of flank build-up (FBU) during the machining of five commercial magnesium alloys. It was demonstrated that the presence of intermetallic β-phase in magnesium matrix is responsible for the difference in the machinability of magnesium alloys. Experimental tests have revealed that surface defects such as cracks and pores may promote the formation of the FBU. The influence of cutting speed on the FBU formation was studied with the aid of surface roughness, tool forces, and chip form.
Keywords
Flank build-up; Machining; Magnesium
Hrčak ID:
40656
URI
Publication date:
31.12.2008.
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