INVESTIGATION OF INTERMETALLIC TITANIUM ALLOY WITH COPPER ADDITION MADE BY BINDER JETTING WITH SUBSEQUENT SINTERING

This article examines intermetallic titanium alloys based on TiAl, fabricated using binder jetting additive manufacturing technology with the addition of copper. TiAl-based alloy powder was mixed with copper powder in various concentrations (0, 2, 4, and 6 wt.%). Samples were fabricated from the powder mixture using binder jetting followed by sintering. The addition of copper significantly improved the density of the sintered samples (from 3.65 g/cm3 for TiAl samples without copper addition to 3.99 g/cm3 for TiAl samples with 2% copper). Metallographic analysis showed a reduction in porosity from 23% to 2.5% with the addition of 2% copper. An analysis of the microhardness of the samples and their tensile properties was also conducted.