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Effects Of Process Variants On Metallurgical And Mechanical Properties In Friction Stir Welding Of Aluminum Alloys, Xiaomin Huang
Effects Of Process Variants On Metallurgical And Mechanical Properties In Friction Stir Welding Of Aluminum Alloys, Xiaomin Huang
Theses and Dissertations
Conventional shoulder friction stir welding (CSFSW) produces uneven heat input through welded material thickness: higher close to the top and lower close to the bottom. When CSFSW is applied on certain aluminum alloys, such as 7xxx and 2xxx series high strength aluminum alloys which contain low melting point intermetallic, overheating and local melting may happen close to weld crown. Stationary shoulder friction stir welding (SSFSW) may generate much more uniform heat input through plate thickness than CSFSW due to the non-rotating shoulder and rotating pin. Therefore, overheating and local melting are expected to be avoided in SSFSW. Furthermore, local properties …