ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Commercial purity aluminium AA1050 and aluminium alloy AA6016 were accumulativeroll bonded and subsequently friction stir welded. The microstructure of the conventional andultrafine-grained materials produced by accumulative roll bonding is strongly affected by frictionstir welding. The elongated ultrafine-grained microstructure of roll bonded sheets becomes coarserand equiaxed in the nugget region. Hydraulic bulge tests showed that higher burst pressure can beachieved 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 withinthe nugget. Friction stir welded AA1050 sheet showed similar achievable burst pressures and vonMises equivalent strains compared to the as-received conventionally grained sheets. On the otherhand, significantly higher burst pressures and at the same time higher von Mises equivalent strainswere observed for the friction stir welded ultrafine-grained material than for the friction stir weldedconventionally grained material
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.584-586.833.pdf
Permalink
