CoCrNi(TiAl)x alloys ( \(x = 2.6\) and 6 at.%, TiAl = 1:1) were fabricated by laser-directed energy deposition (L-DED). X-ray diffraction (XRD) confirmed that both alloys consisted of an FCC matrix with ordered L12 precipitates, while EBSD and TEM further revealed the microstructural features of the as-deposited alloys. The \(x = 2.6\) at.% alloy exhibits a good strength–ductility balance, with a yield strength of 506 MPa, an ultimate tensile strength of 782 MPa, and an elongation of 39%. At \(x = 6\) at.%, the yield strength and ultimate tensile strength increase to 740 MPa and 1100 MPa, respectively, while an elongation of 28% is maintained. The improved mechanical performance is mainly attributed to precipitation strengthening, assisted by solid-solution and grain-boundary strengthening. These results demonstrate the good L-DED processability of the alloys and their potential for structural additive manufacturing.
