Author/Authors :
Luo، نويسنده , , Q. and Robinson، نويسنده , , G. and Pittman، نويسنده , , M. and Howarth، نويسنده , , M. and Sim، نويسنده , , Paul Stalley، نويسنده , , M.R. and Leitner، نويسنده , , H. and Ebner، نويسنده , , R. and Caliskanoglu، نويسنده , , D. and Hovsepian، نويسنده , , P.Eh.، نويسنده ,
Abstract :
A low-friction and wear resistant TiAlN/VN multilayer coating with TiAlN/VN bilayer thickness 3 nm has been grown by using the combined cathodic arc etching and unbalanced magnetron sputtering deposition on high speed steel tools for dry cutting of aluminium alloys. In this paper, in-lab and industrial high speed milling tests have been performed on an aerospace aluminium alloy 7010-T7651. The results show that the TiAlN/VN coated tools achieved lower cutting forces, lower metal surface roughness, and significantly longer tool lifetime by three times over the uncoated tools as a result of the low friction and eliminated tool-metal adhesion. Under the same conditions, a TiAlN based multicomponent coating TiAlCrYN also increased the tool lifetime by up to 100% despite the high cutting forces measured.
Keywords :
TiAlN/VN , Aluminium alloy , High speed milling , Nano-structured multilayer , TiAlCrYN
