Corrosion behaviour of friction stir welded AA2219 aluminium alloy
- Zhuang Q.Y. ,
- Zhang H. ,
- Wu H.Q. ,
- et al
- Zhuang Q.Y. ,
- Zhang H. ,
- Wu H.Q. ,
- Qin H.L. and
- Sun D.T.
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AA 2219-T87 (Al, 5.8-6.8%Cu, 0.2-0.4%Mn) aluminium alloy plates (thickness 8 mm) were joined by friction stir welding (FSW) and their microstructure, mechanical properties and corrosion behaviour were investigated. FSW experiments were conducted using a 20 mm shoulder diameter tool and a coniform threaded pin at a travel speed of 50 mm/min and a rotational speed of 800 rpm. Joint microstructures in parent metal, nugget, HAZ and thermomechanically affected zones were observed by optical microscopy and SEM, and mechanical properties were characterised by Vickers microhardness tests. Corrosion behaviour was studied using ASTM G110-92 intergranular corrosion immersion tests. The relationships between microstructure, microhardness and corrosion behaviour are discussed.
10th International Symposium, 20-22 May 2014, Poster Session, Paper 19
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