Z. Rihova and K. Saksl and C. Siemers and D. Ostroushko
Analyses of Wear Mechanisms Occurring During Machining of the Titanium Alloy Ti 6Al2Sn4Zr6Mo
868 - 871
2012
6
8
International Journal of Materials and Metallurgical Engineering
https://publications.waset.org/pdf/6048
https://publications.waset.org/vol/68
World Academy of Science, Engineering and Technology
Titanium alloys like the modern alloy Ti 6Al 2Sn 4Zr 6Mo (Ti6246) combine excellent specific mechanical properties and corrosion resistance. On the other hand,due to their material characteristics, machining of these alloys is difficult to perform. The aim of the current study is the analyses of wear mechanisms of coated cemented carbide tools applied in orthogonal cutting experiments of Ti6246 alloy. Round bars were machined with standard coated tools in dry conditions on a CNC latheusing a wide range of cutting speeds and cutting depths. Tool wear mechanisms were afterwards investigated by means of stereo microscopy, optical microscopy, confocal microscopy and scanning electron microscopy. Wear mechanisms included fracture of the tool tip (total failure) and abrasion. Specific wear features like crater wear, micro cracks and builtup edgeformation appeared depending of the mechanical and thermal conditions generated in the workpiece surface by the cutting action.
Open Science Index 68, 2012