Integral wing panel for airplanes produced by friction stir welded extrusion
- Kumagai M. ,
- Tanaka S. ,
- Hatta H. ,
- et al
- Kumagai M. ,
- Tanaka S. ,
- Hatta H. ,
- Yoshida H. and
- Sato H.
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Friction stir welding (FSW) was investigated in aluminium alloys used in aircraft structures. Extruded shapes in alloys 2024 (Al, 4.96%Cu), 7475 (Al, 5.96%Zn, 2.57%Mg, 1.62%Cu) and 7050 (Al, 6.29%Zn, 2.36%Mg, 2.00%Cu) were welded; welds were evaluated by appearance, microstructure, tensile properties, hardness, fatigue and stress corrosion. Two sequences were assessed for joint efficiency and stress corrosion resistance (compared to parent metal): solution heat treatment (SHT), ageing, FSW and SHT, FSW, ageing. Large panels (integral wing panels) were made from 7050 extrusions. Photographs show the macrostructures and microstructures of the joints and stress corrosion cracks, parent metal, HAZ and stir zone. Graphs show the hardness distribution across 7050 joints, and the distortion across a panel is tabulated.
3rd International Symposium, 27-28 Sep 2001, Session 6: Metallurgy, Paper 02
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