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 d...

Abstract: nanocrystalline nickel samples with the grain size of ~25 nm were prepared via direct current electrodeposition andaluminized for different durations by pack cementation method at 500 means of SEM, EDS and XRD techniques. According to results, short time aluminizing resulted in the formation of asingle aluminide layer whereas at long duration two distinct aluminide layers were formed....

Polysynthetically-twinned titanium aluminide (PST-TiAl), a fully lamellar γ-TiAl+α2Ti3Al dual-phase alloy, is under evaluation for applications in rotary components in aircraft and automobile industries due to its high specific strength, and a high strength-retention capability at elevated-temperatures. However, the low ductility at roomto mid-high temperatures of the material hinders its appli...

Hot isostatic pressing (HIP) and subsequent heat-treatments (HT) are necessary for titanium aluminide (TiAl) casting components. But there few studies carefully comparing the microstructure changes from initial as-cast condition to final heat-treated condition. In this study, microstructures of Ti-47Al-2Cr-2Nb (at%) alloy in as-cast, as-HIPed as-heat-treated conditions were characterized by opt...