The Use of Bobbin Tools for Friction Stir Welding of Aluminium Alloys

Philip L. Threadgill; M.M.Z. Ahmed; Jonathan P. Martin; Jonathan G. Perrett; Bradley P. Wynne

doi:10.4028/www.scientific.net/MSF.638-642.1179

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HomeMaterials Science ForumMaterials Science Forum Vols. 638-642The Use of Bobbin Tools for Friction Stir Welding...

The Use of Bobbin Tools for Friction Stir Welding of Aluminium Alloys

Abstract:

The use of a double sided friction stir welding tool (known as a bobbin tool) has the advantage of giving a processed zone in the workpiece which is more or less rectangular in cross section, as opposed the triangular zone which is more typically found when conventional friction stir welding tool designs are used. In addition, the net axial force on the workpiece is almost zero, which has significant beneficial implications in machine design and cost. However, the response of these tools in generating fine microstructures in the nugget area has not been established. The paper presents detailed metallographic analyses of microstructures produced in 25mm AA6082-T6 aluminium wrought alloy, and examines grain size, texture and mechanical properties as a function of processing parameters and tool design, and offers comparison with data from welds made with conventional tools.

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Periodical:

Materials Science Forum (Volumes 638-642)

Pages:

1179-1184

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.638-642.1179

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Cite this paper

Online since:

January 2010

Authors:

Philip L. Threadgill, M.M.Z. Ahmed, Jonathan P. Martin, Jonathan G. Perrett, Bradley P. Wynne

Keywords:

Aluminum (Al), Bobbin Tools, Electron Backscatter Diffraction (EBSD), Friction Stir Welding (FSW), Microstructure, Texture

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