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Influence Of Friction Stir Welding On The Microstructural Evolution, Mechanical Properties And Superplastic Behavior Of Al-Cu-Li Alloy (Aa 2095), Moataz Attallah
Influence Of Friction Stir Welding On The Microstructural Evolution, Mechanical Properties And Superplastic Behavior Of Al-Cu-Li Alloy (Aa 2095), Moataz Attallah
Archived Theses and Dissertations
Friction Stir Welding (FSW) is a new solid state welding technique which is characterized by its ability to join the difficult-to-weld alloys, notably aluminum alloys. Microstructural studies revealed that FSW produces fine grain structure within the weld nugget due to the extensive plastic deformation and dynamic recrystallization (DRX) associated with it. Further studies hypothetically suggested that thermo-mechanical processing using friction stir can be used as a technique to create ultra-fine grain structure for superplastic forming (SPF). Yet, a more practical and economic suggestion indicated the suitability of combining FSW with SPF technologies in a way similar to the existing combination …