Friction stir spot welding between dissimilar light metals
- Yasui T. ,
- Tahara H. ,
- Suzuki T. ,
- et al
- Yasui T. ,
- Tahara H. ,
- Suzuki T. ,
- Tsubaki M. and
- Fukumoto M.
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Description
Friction stir spot welding (FSSW) experiments were undertaken to fabricate dissimilar metal joints between aluminium and light metals such as magnesium and titanium, and the microstructure and mechanical properties of the weldments were investigated. The materials studied were AA 6061 aluminium alloy, AZ 31 magnesium alloy and TP 340 titanium alloy. FSSW was conducted with either a flat tool without a probe or a probe tool. Joint microstructure was observed by optical microscopy, SEM and TEM. Mechanical properties were characterised by tensile shear strength tests. The temperature of the weld interface at the weld centre was measured with a thermocouple. The relationship between tensile shear strength and process conditions (e.g. tool shape, rotational speed, plunge depth, welding time) is discussed.
9th International Symposium, 15-17 May 2012, Session 9B: FSSW, Paper 03
Subjects
- Friction welding
- Welding
- Process
- Friction stir spot welding
- Material
- Dissimilar materials
- Aluminium and Al alloys
- Nonferrous
- 6xxx Al series
- Magnesium and Mg alloys
- Titanium and Ti alloys
- Process equipment
- Friction stir welding tools
- Process conditions
- Strength
- Mechanical properties
- Properties
- Shear strength
- Microstructure
- Ultimate tensile strength
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