Laser Beam Welding of Inconel Alloys: A Review

Abstract

Abstract In the current study, the state-of-the-art laser welding process of Inconel alloys are discussed in detail. The review work is mainly focused on the articles that describe the current status, challenges and relationship between the laser welding parameters and related outcomes in laser welding of Inconel alloys in similar and dissimilar configurations. Laser beam welding (LBW) offers precise welding methods, higher speed, and the potential to produce high-quality weld joints with lower deformation and minimal residual stresses in the welded parts. Laser welding is a complicated welding procedure having many controlling variables. But this process is stochastic in nature. Laser parameter is one of the critical variables which controls the weld quality. Inconel alloys belong to the Ni-Cr-based superalloy class acclaimed with remarkable properties such as exceptional strength, excellent fabricability, and corrosion resistance behavior. These alloys are significantly used in many industrial products such as gas turbine blades, aircraft, and marine components. The review highlights laser welding’s advantages over conventional welding technologies like arc and gas-welding. This research paper concludes with a key challenge such as process stability, material characterization, and standardization of the laser welding process for Inconel alloys and their opportunities for future research and development.