The laser manufactured high-performance GH4169 Ni-based alloys were generally prepared in a closed environment, resulting in limited component dimension and increased fabrication cost. In order to broaden the application of laser additive manufacturing and remanufacturing GH4169 alloy, this work was attempted under different atmospheres (Ar, N-2) in atmospheric environment. The results indicate that the laser-repaired layer under Ar atmosphere is mainly composed of. phase and long-chain shaped Laves phase, with a typical columnar crystal structure. The tensile strength, yield strength and elon...
