Microstructural, mechanical and corrosive properties of friction stir welded aluminium joints

被引:14
作者
Donne, CD [1 ]
Braun, R [1 ]
Staniek, G [1 ]
Jung, A [1 ]
Kaysser, WA [1 ]
机构
[1] Deutsch Zentrum Luftund Raumfahrt, DLR, Inst Werkstoff Forsch, D-51170 Cologne, Germany
关键词
D O I
10.1002/mawe.19980291012
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Friction stir welding (FSW) is a novel solid state welding process. It allows joining of high strength aluminum alloys, generally considered as difficult-to-weld with conventional technologies, without loss in joint strength. Results of investigations on self-made FSW butt joints of the aluminum alloys 2024-T3 and 6013-T4 are presented. First, the microstructure of the weld seam and heat affected zone is characterised metallographically and by hardness measurements. By tensile, fatigue endurance (SM) and fatigue crack propagation tests it is demonstrated, that especially the FSW-joints of 2024-T3 sustain high mechanical loadings. Investigations on the corrosion properties reveal a certain sensitivity of the 2024-T3 joints to intergranular and exfoliation corrosion.
引用
收藏
页码:609 / 617
页数:9
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