Evaluation of the effects of rotational speed on microstructural and mechanical properties of additive friction stir deposited aluminum 6061

This graduate thesis evaluates the effects of rotational speed on the microstructural and mechanical properties of additive friction stir deposited aluminum 6061. The study aims to understand how varying rotational speeds during the friction stir process influences the final properties of the aluminum alloy. A detailed methodology was employed, involving the preparation and analysis of samples subjected to different rotational speeds, followed by microstructural examinations and mechanical testing. Results indicate significant variations in grain structure, hardness, and tensile strength correlating with the specified rotational speeds. Specific findings show that higher rotational speeds tend to refine the microstructure, leading to improved mechanical properties, particularly tensile strength. These insights provide a deeper understanding of the relationship between process parameters and material performance, allowing for optimization in additive manufacturing processes. It also highlights the potential for enhancing the mechanical integrity of aluminum components produced through friction stir deposition techniques. This research contributes valuable data and practical guidelines that could influence future practices in the field of additive manufacturing within the engineering sector.