Development and evaluation of alternative materials for friction stir welding of steel

摘要

During the friction stir welding process (FSW) of steel, the tool is subjected to extremely high temperatures of approximately 1200°C and corrosive and abrasive wear. Therefore, the requirements for mechanical, chemical and tribological resistance at high temperatures demand material systems with outstanding properties. Thus, occurring stresses of the tool and its interaction with the workpiece to be welded is of particular importance. The article reports about development and evaluation of ceramic tools for the FSW.