Fsw has enabled the joining of previously difcult to

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Unformatted text preview: ductivity, and ductility and is now being used on the external tank of the Space Shuttle and the Eclipse business jet. FSW has enabled the joining of previously difficult to weld alloys, often with improved mechanical properties and corrosion resistance. Experience with FSW in the fabrication of fast ferries and bridge decks indicates that the process has increased automation, improved dimensional tolerances, reduced residual stresses, and lowered manpower needs. The process is especially advantageous in the fabrication of long butt welds, but welding along curves and around cylinders is now also possible. Figure 7. Schematic of Friction Stir Welding. While FSW is being developed for other metals as well, its application for aluminum has been most dominant. One reason for this is that tooling costs are relatively low for aluminum. The relatively low melting temperature of aluminum (~660°C) as compared to steel (~1,500°C) for example, ensures that the wear of the spinning tool and the forces required for the welding process are much reduced. For the fabrication of rail and passenger cars, FSW is an ideal proc...
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This note was uploaded on 01/27/2014 for the course CM 312 taught by Professor Mariowriedt during the Spring '10 term at Clarkson University .

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