Enhanced strength and ductility of friction stir welded Al-Cu-Mg alloy joints
- Zhang Z.H. ,
- Li W.Y. ,
- Jiang R.R. ,
- et al
- Zhang Z.H. ,
- Li W.Y. ,
- Jiang R.R. and
- Li J.L.
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Friction stir welding experiments were conducted on AA 2024-T3 Al-Cu-Mg alloys to investigate the influence of backplate design on joint microstructure and mechanical properties. Trials were performed using three specially designed backplates based on medium carbon steel and a standard steel backplate. Microstructure in the nugget zone was observed by TEM and differential scanning calorimetry was carried out at a heating rate of 10 deg.C/min in the temperature range 50-550 deg.C. Room temperature uniaxial tensile tests were undertaken at a crosshead speed of 1 mm/min. The efficacy of the specially designed backplates was assessed with respect to the strength-ductility synergy.
10th International Symposium, 20-22 May 2014, Poster Session, Paper 18
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