Assessment of Corrosion and Macrostructural Behavior of Ti6321/SS 310 Butt Joints: In Situ Study of Similar and Dissimilar Joints via Friction Stir Welding Technique

The article delves into the assessment of corrosion and macrostructural behavior of Ti6321/SS 310 butt joints using the friction stir welding (FSW) technique. It begins by explaining the advantages of FSW over conventional welding methods, highlighting its flexibility, energy efficiency, and eco-friendliness. The study focuses on the use of Ti6321, a potential matrix for aggressive aerospace conditions, and SS 310, a commonly used austenitic stainless steel in various industries. The research investigates the influence of FSW parameters such as welding duration, welding intensity, and rotation velocity on the dimensions of the nugget zone, its hardness, and overall durability. The authors conduct comprehensive experiments, including compression tests, hardness tests, tensile tests, and corrosion tests, to evaluate the mechanical properties and corrosion resistance of the welded joints. The results show that the FSW technique significantly improves the mechanical characteristics and corrosion resistance of the joints, making it a promising method for various industrial applications. The study also includes microstructural evolution analysis and surface morphology studies using EBSD and SEM, providing a detailed understanding of the material’s behavior during the welding process. Overall, the article offers valuable insights into the application of FSW for creating high-performance and high-quality weld nuggets, making it a must-read for professionals in materials science and welding engineering.