Fatigue performance of friction stir welded AlMgSi-alloy 6082
2001 (English)In: Aluminium, ISSN 0002-6689, Vol. 77, no 7-8, 572-575 p.Article in journal (Other academic) Published
Friction stir welding is a relatively new solid-state welding method, ideal to join large, thin-walled aluminium profiles. In this paper results from tensile and fatigue testing of friction stir welds of the hardenable Al-Mg-Si alloy AA6082 is presented. For temper T4, post weld age treated (PWAT), the fatigue strength was found to be lower than for temper T6, and with a steeper slope of the stress-life curve. The lower fatigue strength for the statically stronger T4 + PWAT material was unexpected. Fracture in T6 initiated and propagated in the vicinity of the weak weld/HAZ border, directly outside the stirred up edge on the advancing (or shear-) side of the weld. For T4 + PWAT many fractures occurred in the weld, often initiated on the advancing side.
Place, publisher, year, edition, pages
2001. Vol. 77, no 7-8, 572-575 p.
IdentifiersURN: urn:nbn:se:kth:diva-25117OAI: oai:DiVA.org:kth-25117DiVA: diva2:355880
QC 201010082010-10-082010-10-082010-10-08Bibliographically approved