A comparative study on friction stir welds of 2024 alloy and 2124-25%vol. SiCp Al composite
- Gesto D. ,
- Ferreira-Barragans S. ,
- Rey P. ,
- et al
- Gesto D. ,
- Ferreira-Barragans S. ,
- Rey P. ,
- Fernandez R. and
- Gonzalez-Doncel G.
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Description
The effects of friction stir welding (FSW) on the microstructure, hardness, residual stress state and grain distribution of 2124 Al-SiC composite alloy were investigated. The composite was of AMC225xe aerospace AW2124 alloy reinforced with 25% SiC particles. Welds were made in 2024 AlCu alloy and in the 2124-25% SiC composite (15 mm thickness). The alloys were friction-stir welded in two runs after thermal treatment. The runs were made one each side of the plates and the influence of rotating tool speed (400-800 rpm) was studied. Microstructure was characterised using optical and scanning microscopies and microhardness maps across the weld were established. The improved distribution of SiC particles in the nugget compared with the parent material, due to the stirring action of the pin tool, is discussed.
8th International Symposium, 18-20 May 2010, Session 8A: Non Ferrous, Paper 04
Subjects
- Friction welding
- Welding
- Process
- Friction stir welding
- Aluminium and Al alloys
- Nonferrous
- Material
- 2xxx Al series
- Ceramics
- Composite materials
- Stress
- Residual stresses
- Microstructure
- Grain
- Mechanical properties
- Properties
- Hardness
- Process conditions
- Weld zone
- Weld
- Dynamically recrystallised zone
- Particle reinforced composites
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