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Published in: Journal of Materials Engineering and Performance 11/2014

01-11-2014

Preliminary Study on the Formability of a Laser-Welded Superplastic Aluminum Alloy

Authors: D. Sorgente, O. Corizzo, M. Brandizzi, L. Tricarico

Published in: Journal of Materials Engineering and Performance | Issue 11/2014

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Abstract

In this work, the effect of the laser-material interaction on the formability of a superplastic aluminum alloy was investigated. In applications such as Tailor-Welded Blanks and in the manufacturing of very large components with a complex shape, laser welding combined with superplastic forming may be a very fitting industrial tool. Bead on plate tests were carried out in order to simulate the laser-welding process and then, free inflation tests were performed to evaluate the compatibility of these two processing techniques. The Al-Mg alloy used in this work has a very small grain size which ensures the superplastic behavior. With the aim of preserving this peculiarity, the following aspects on the formability were investigated: (i) the surface condition of the bead before the forming test (with and without the removal of the excess of metal); (ii) the effect of the travel speed of the laser source on the mean grain size; (iii) the introduction of a refiner, commonly used in aluminum casts, in the molten pool in order to further reduce the mean grain size.

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Metadata
Title
Preliminary Study on the Formability of a Laser-Welded Superplastic Aluminum Alloy
Authors
D. Sorgente
O. Corizzo
M. Brandizzi
L. Tricarico
Publication date
01-11-2014
Publisher
Springer US
Published in
Journal of Materials Engineering and Performance / Issue 11/2014
Print ISSN: 1059-9495
Electronic ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-014-1206-2

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