Friction stir processing of aluminum fusion welds
- Fuller C. ,
- Mahoney M. and
- Bingel W.
- Fuller C. ,
- Mahoney M. and
- Bingel W.
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Description
An experimental study was carried out to investigate the effect of friction stir processing (FSP) on the microstructure and mechanical properties of fusion welded aluminium alloys. MIG welds in plates of thickness 6 mm of 5083-H321 aluminium alloy (Al, 4.7%Mg, 0.5%Mn) were subjected to FSP at fusion weld toe, crown and HAZ locations; FSP was carried out using two different tool geometries. The microstructure and distribution of precipitates and grains in the weld metal, parent metal and fine grained FSP zone were examined. Tensile properties were determined and surface residual stress measurements were made. The relationship between microstructure and mechanical properties is discussed. The effectiveness of FSP in improving weld properties in the different weld regions is considered.
4th International Symposium, 14-16 May 2003, Session 7: Process & Equipment 3, Paper 03
Subjects
- Surface engineering
- Process
- Friction stir processing
- Defects
- Deformation
- Aluminium and Al alloys
- Nonferrous
- Material
- 5xxx Al series
- Microstructure
- Arc welding
- Welding
- MIG/MAG welding
- Stress
- Residual stresses
- Weld zone
- Weld
- HAZ
- Properties
- Mechanical properties
- Weld metal
- Grain
- Dynamically recrystallised zone
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