Abstract:A novel nitrogenous nickel-based deposited metal was prepared by gas metal arc welding. Subsequently, solid solution treatment as well as solution and aging treatments were conducted on the prepared metal to study the evolution of microstructure and tensile properties at different states. Results show that the high-temperature tensile strength of the deposited metal exhibits good performance after the addition of W and N. The grain size of the sample is large, and petal-like Laves phase appears at the grain boundaries. After solid solution treatment, the grain size decreases, and the Laves phase disappears. However, both the yield strength and elongation of the deposited metal decrease. The grain size of the samples after solid solution and aging treatment is more uniform, nanoscale M(C, N) phases are precipitated within the crystals, and M23C6 phase forms at grain boundaries. The yield strength and ultimate tensile strength of this sample are higher than those of the other samples, but its plasticity is the lowest. The main deformation mechanism is the unit dislocation a/2<110> cutting the precipitation phase.