Research Progress on Joining of Solid Solution Strengthened Nickel-Based Superalloy and Its Welding With Dissimilar Materials
CHEN Guoqing1 , ZHANG Ge1 , LIU Zheng2 , SHU Xi1 , ZHANG Binggang1
(1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China; 2. Xi’an Space Engine Co., Ltd. Xi’an 710100, China)
Abstract：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.
2021, 
