Solid solution strengthened nickel-based superalloy has high service temperature

good high temperature oxidation resistance and corrosion resistance

and is widely used in the manufacture of high temperature parts such as aero-engine and ultra-supercritical power station. Compared with precipitation strengthened nickel-based superalloy

the weldability of solid solution strengthened nickel base superalloy is relatively better

and the formation of welding cracks can be avoided by adjusting welding process and alloy composition. With the increasing application of solid solution strengthened nickel-based superalloys

the welding of superalloys and dissimilar materials shows great research value. Therefore

the research progress of solid solution strengthened nickel-based superalloy and its welding technology with dissimilar materials is reviewed in this paper

which mainly involves argon arc welding

laser welding

electron beam welding

brazing and diffusion bonding

and the research prospect of solid solution strengthened nickel-based superalloy welding is also discussed.