Feasibility investigation of similar and dissimilar AA2024 and AA7075 friction stir spot welded aluminium alloys
- Echeverria A. ,
- Zabaleta A. ,
- Alvarez P. ,
- et al
- Echeverria A. ,
- Zabaleta A. ,
- Alvarez P. ,
- Aldanondo E. ,
- Solis J. and
- da Silva A.A.M.
Links
Repository
Description
Friction stir spot welding (FSSW) experiments were undertaken on sheet specimens of similar and dissimilar combinations of AA 2024-T3 (thickness 1.27 mm), AA 2024-O (2.2 mm) and AA 7075-T6 (1.27 mm) aluminium alloys under various process conditions, and the microstructure and mechanical properties of the welded joints were investigated. FSSW was performed in an overlap configuration and the parameters varied were plunge rate (0.09-0.42 mm/s), rotational speed (1700 or 2200 rpm) and plunge depth (2.77-2.82 mm). Microstructure was observed by optical microscopy. Mechanical properties were characterised by hardness measurements and shear tests. Issues discussed include alloy intermixing in the stir zone and the correlation between mechanical performance and process parameters.
7th International Symposium, 20-22 May 2008, 7A: Spot 2 (Mg/Fe/Al), Paper 01
Subjects
- Friction welding
- Welding
- Process
- Friction stir spot welding
- Aluminium and Al alloys
- Nonferrous
- Material
- 7xxx Al series
- 2xxx Al series
- Dissimilar materials
- Microstructure
- Mechanical properties
- Properties
- Hardness
- Strength
- Weld zone
- Weld
- Dynamically recrystallised zone
- HAZ
- Thermomechanically affected zone
- Process conditions
Related Records
