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Artigo Científico | Geral Soldagem e Ensaios Não-Destrutivos | Inglês | 12/01/2006
Autores: C. Barbosa, J. Dille, J.-L. Delplancke, J.M.A. Rebello, O. Acselrad
Palavras-chave: aluminum alloys, flash welding, ligas de alumínio, microscopia eletrônica de transmissão, soldagem por centelhamento, transmission electron microscopy
Abstract: Extruded, flash welded and artificially aged 6061 and 6013 aluminum alloys were analyzed with the use of techniques such as transmission electron microscopy (TEM) imaging, selected area electron diffraction (SAD) and X-ray energy-dispersive spectroscopy (EDS) in order to identify the precipitates present in both alloys. Vickers microhardness measurements were performed at different distances from the weld interface. The results show a weak decrease of microhardness near the 6013 alloy weld interface. On the other hand, there is an important microhardness drop near the 6061 weld interface. This drop can be explained by a lack of fine structural precipitation during the aging treatment in the 6061 weld interface zone.
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