Experimental and Numerical Study of Maximum Welding Joint Temperature Impacts in Alloy Steel Pipe Welding Microstructure, Distortion, Corrosion Resistance, and Mechanical Properties

This study investigates how welding currents influence maximum temperature exchange cross welding joints. The study also examines how these modifications impact the alloy steel pipe welding deformation, corrosion resistance, microstructure, and mechanical properties. This study utilizes numerical models and experimental methods using finite element (FE) technique. Study used SolidWorks software program to generate threedimensional thermos elastic-plastic finite element models. ANSYS software used to analyze a simulation model, including a double-ellipsoidal heat source model, material properties dependent on temperature, and the influence of geometric parameters. The finite element models' correctness was validated by comparing simulation results and empirically obtained data. Both computational techniques and observations indicate that higher maximum welding joint heat substantially affects the development of distortion, change of microstructure, and the resulting impact on joint corrosion resistance. The numerical findings of this research are significant for comprehending the precision needed to capture welding process's essential intricacies. From welding engineering perspective, this work's conclusions are relevant. They demonstrate transverse residual stress fields caused by short fillet welds concentrated in certain areas and have much higher peak magnitudes than continuous pipe welds.