Mechanical and Corrosion Behaviour of the 2139 Aluminium-Copper Alloy Welded by the Friction Stir Welding Using the Bobbin Tool Technique

Delphine Alléhaux; François Marie

doi:10.4028/www.scientific.net/MSF.519-521.1131

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HomeMaterials Science ForumMaterials Science Forum Vols. 519-521Mechanical and Corrosion Behaviour of the 2139...

Mechanical and Corrosion Behaviour of the 2139 Aluminium-Copper Alloy Welded by the Friction Stir Welding Using the Bobbin Tool Technique

Abstract:

The present study deals with the properties assessment of a new generation aluminium-copper alloy, developed by ALCAN and designed 2139, welded by the bobbin tool technique of the FSW process. Considering the best performances of this age formable alloy after T8 aging, both the T4 and T8 tempers prior to welding are assessed. Therefore, the behaviour under static and fatigue load conditions and also in damage tolerance including both fracture toughness and fatigue crack propagation of the FSW bobbin tool weld on 2139 after T8 post aging and on the T8 as welded condition are discussed. The corrosion resistance of the welds is investigated through an accelerated corrosion test with intent to evaluate the intergranular corrosion sensitivity of the weld and the impact of an artificial aging on the properties developed by the T8 as welded condition is also presented.

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Periodical:

Materials Science Forum (Volumes 519-521)

Pages:

1131-1138

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.519-521.1131

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Online since:

July 2006

Authors:

Delphine Alléhaux, François Marie

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References

[1] Lafly A-L, Alléhaux D., Marie F., Dalle Done C., Döker H: Impact of Friction Stir Welding techniques on microstrutural changes and mechanical properties, IIW, Prague, July (2005).

DOI: 10.1007/bf03263466

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[2] Marie F, Alléhaux D., Esmiller B : development of the bobbin tool technique on various Al-alloys, 5th Symposium on FSW, Metz, France, 14-16 Sept (2005).

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[3] Dalle Donne C., Raimbeaux G. : residual stress effects on Fatigue Crack Propagation in Friction Stir Welds , ICF10, Hawaï, USA, 3-7 December (2001).

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