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The effect of specimen size on residual stresses in friction stir welded aluminum components

: Pfeiffer, W.; Reisacher, E.; Windisch, M.; Kahnert, M.

Preprint urn:nbn:de:0011-n-3321287 (364 KByte PDF)
MD5 Fingerprint: 4b7f79d97294096266eb859160b965b4
Created on: 17.6.2016

François, M.:
Residual stresses IX. Selected, peer reviewed papers from the 9th European Conference on Residual Stresses, ECRS 2014 : July 7-10, 2014, Troyes, France
Pfaffikon: TTP, 2014 (Advanced materials research 996)
ISBN: 978-3-03835-153-5
European Conference on Residual Stresses (ECRS) <9, 2014, Troyes>
Conference Paper, Electronic Publication
Fraunhofer IWM ()
friction stir welding; aluminum; residual stresses; size effect

Friction stir welding (FSW) is a well-known technique which allows joining of metal parts without severe distortion. Because FSW involves less heat input relative to conventional welding, it may be assumed that cutting specimens from larger friction stir welded components results in a negligible redistribution of residual stresses. The aim of the investigations was to verify these assumptions for a welded aluminum plate and a circumferentially-welded aluminum cylinder. Strain gage measurements, X-ray diffraction and the incremental hole drilling method were used.