The microstructure of interface in spot welding between aluminum alloy and high-tensile strength steel by friction stirring
- Miyagawa K. ,
- Matsumura H. ,
- Yasui T. ,
- et al
- Miyagawa K. ,
- Matsumura H. ,
- Yasui T. ,
- Tsubaki M. and
- Fukumoto M.
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Description
Friction stir spot welding experiments were conducted on dissimilar metal joints between AA5052 aluminium alloy and two kinds of steel (980 MPa high tensile strength steel and 270 MPa mild steel), and the microstructure and mechanical properties of the welded joints were investigated. The rotating tool incorporated a shoulder with a small conical centre probe and the tool material was WC-Co cemented carbide. The process parameters varied were rotational speed, plunging speed, plunge depth and hold time. Weld microstructure was observed by SEM and TEM and analysed by energy dispersive x-ray spectroscopy. Mechanical properties were evaluated by cross tensile and tensile shear tests. The influence of Fe-Al intermetallic compound layer formation at the weld interface is discussed.
7th International Symposium, 20-22 May 2008, Session 2A: Spot 1 (Al-Steel), Paper 01
Subjects
- Friction welding
- Welding
- Process
- Friction stir spot welding
- Aluminium and Al alloys
- Nonferrous
- Material
- 5xxx Al series
- Steels
- Ferrous
- High strength steels
- Dissimilar materials
- Weldability
- Microstructure
- Strength
- Mechanical properties
- Properties
- Ultimate tensile strength
- Shear strength
- Process conditions
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