Joining Techniques Like Welding in Lightweight Material Structures

Abstract

When welding thin nickel sheets, using a fiber laser beam allows for precise control of the weld size and shape, as well as a high welding speed. The medium in which the welding is performed can affect the process and the quality of the weld. There is a need for more research on the optimization of laser beam welding parameters to achieve the best possible weld quality and efficiency when welding thin nickel sheets. There is a lack of research on the effect of welding on the properties of thin nickel sheets, such as the mechanical properties, corrosion resistance, and microstructure of the welds. The current study has looked at the fiber laser beam welding of thin nickel sheets in air and water, two very distinct media. Different laser strengths and scanning rates are used for the fiber laser welding operations in air. Additionally, investigations into underwater welding processes have been conducted using three distinct laser power and two different scanning rates. The welding performance was measured regarding heat-affected zone, microhardness, and wt.% of oxide formation on the weld surface in both underwater and air. From the results obtained, it was observed that grain size decreases as the microhardness of the weldment increases. When the scanning speed is raised, the heat-affected zone is diminished. With an increase in power, the weight percentage of oxygen rises. © 2024 selection and editorial matter, Pankaj Kumar, Manowar Hussain, Amit Kumar Jain and Sunil Pathak

individual chapters, the contributors.