Sustainable Lubrication/Cooling Systems for Efficient Turning Operations of ?-TiAl Parts from the Aeronautic Industry

Abstract This paper presents the study of finishing, repair, and maintenance turning operations gamma titanium aluminide (?-TiAl) parts from aeronautic industry, with aim to evaluate different sustainable lubrication/cooling environments, including a newly developed synthetic ester water-based metalworking fluid (EcoMWF) replace mineral-based MWF (MWF). The systems considered in this work are dry, cold-compressed air, minimum quantity lubrication (MQL), cryogenic, flood on new relatively low explored alloy, ?-TiAl. Therefore, influence machining parameters insert type tool wear, surface roughness, roundness, cutting temperature have been investigated for each environment. Results detailed showed significant machinability also revealed that sustainability ?-TiAl could be improved under cryogenic system EcoMWF, keeping same performance as common MWF. Graphical abstract