The Paton Welding Journal, 2008, №06

2008 №06 (07)

2008 №06 (09)

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The Paton Welding Journal, 2008, #6, 39-43 pages

Characteristic defects in FSW of sheet aluminium alloys and main causes for their formation

A.G. Poklyatsky

E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
Characteristic defects formed in friction stir welds on aluminium alloy sheets (1.8-2.5 mm) are considered. The effect of the main welding process parameters and different technological factors on formation of these defects was studied. Main causes of lacks-of-fusion, formation of flash and overheating of metal on the weld metal face, as well as lacks-of-fusion in the root part of the welds and formation of defects in the form of discontinuities in their central part were established. Designs of the tools were developed, and ranges of variation of the main process parameters were determined, providing sound friction stir welded joints on aluminium alloy sheets
Keywords: friction stir welding, thin aluminium alloys, welded joint, weld defects, lacks-of-fusion, overheating, flash, discontinuities, defect prevention

References

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Suggested Citation

A.G. Poklyatsky (2008) Characteristic defects in FSW of sheet aluminium alloys and main causes for their formation. The Paton Welding J., 06, 39-43.

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