Macrostructure of butt weld between aluminum and steel by friction stirring
- Yasui T. ,
- Ishii T. ,
- Tsubaki M. ,
- et al
- Yasui T. ,
- Ishii T. ,
- Tsubaki M. and
- Fukumoto M.
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Description
Friction stir welding experiments between AA 6063 aluminium alloy and S45C carbon steel (thickness 6 mm) were performed, and the effects of heat input on the butt joint macrostructure (cavities formed at weld interface), hardness and plastic flow of aluminium were investigated. Variations in rotational speed (3000-5000 rpm) and welding speed (150-1250 mm/min) were used to control the heat input per unit weld length. Some aluminium workpieces were preheated with a hot plate at 100, 200, 300 or 400 deg.C. During welding, the surface temperature of aluminium and tool torque were monitored. To visualise aluminium plastic flow, incorporated iron, acting as a marker material, was observed by X-ray computed tomography (SkyScan 1072).
6th International Symposium, 10-13 Oct 2006, Session 14B: Dissimilar and Metallurgy II, Paper 02
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