Deformation Behaviour of Accumulative Roll Bonded and Friction Stir Welded Aluminium Alloys

Irena Topic; Heinz Werner Höppel; Matthias Göken

doi:10.4028/www.scientific.net/MSF.584-586.833

Paper Titles

Effect of Trace Impurities on High-Cycle Fatigue Damage of Ultrafine Grained Copper Processed by Equal Channel Angular Pressing
p.809

Microstructure and Mechanical Properties Affecting Crack Growth Behaviour in AA6060 Produced by Equal-Channel Angular Extrusion
p.815

Fatigue-Crack-Growth Behavior of Ultrafine-Grained Al-Mg-Sc Alloy Produced by ECAP
p.821

Cycling of Ultrafine-Grained Ti-6Al-4V ELI Alloy: Microstructural Changes and Enhanced Fatigue Limit
p.827

Deformation Behaviour of Accumulative Roll Bonded and Friction Stir Welded Aluminium Alloys
p.833

Cyclic Deformation Behaviour and Fatigue Lives of Ultrafine-Grained Aluminium-Magnesium Alloys
p.840

Microstructural Evolution and Creep of an Al-0.2wt.%Sc Alloy after Equal-Channel Angular Pressing
p.846

Martensitic Transformations and Functional Stability in Ultra-Fine Grained NiTi Shape Memory Alloys
p.852

Influence of Post-ECAP TMT on Mechanical Properties of the Wrought Magnesium Alloy AZ80
p.858

HomeMaterials Science ForumMaterials Science Forum Vols. 584-586Deformation Behaviour of Accumulative Roll Bonded...

Deformation Behaviour of Accumulative Roll Bonded and Friction Stir Welded Aluminium Alloys

Abstract:

Commercial purity aluminium AA1050 and aluminium alloy AA6016 were accumulative roll bonded and subsequently friction stir welded. The microstructure of the conventional and ultrafine-grained materials produced by accumulative roll bonding is strongly affected by friction stir welding. The elongated ultrafine-grained microstructure of roll bonded sheets becomes coarser and equiaxed in the nugget region. Hydraulic bulge tests showed that higher burst pressure can be achieved for samples without friction stir welding than for the ones with friction stir welding. Localised deformation, crack initiation and propagation, as well as the final fracture occurred within the nugget. Friction stir welded AA1050 sheet showed similar achievable burst pressures and von Mises equivalent strains compared to the as-received conventionally grained sheets. On the other hand, significantly higher burst pressures and at the same time higher von Mises equivalent strains were observed for the friction stir welded ultrafine-grained material than for the friction stir welded conventionally grained material.