Tribological characterization of tribosystem Ti48Al2Cr2Nb-coated/uncoated carbide tools at different temperatures

Titanium aluminide Ti48Al2Cr2Nb was tribologically tested on a pin-on-disk tribometer from −50 to 600 °C, using coated and uncoated carbide cutting tools as a pin. The goals were to characterise the wear and friction behaviour and to find the most efficient tool for turning processes. A transition from ploughing to plastic deformation and adhesive wear was observed as temperature raises. The friction coefficient reached the minimum value at 600...