ANALYSIS OF TEAR-OFF OF BONDED LAYERS IN FURTHER ROLLING 3-LAYERED ALUMINUM SHEETS

1 Szabó Gábor
Co-authors:
2 Mikó Tamás 2 Puskás Csaba 2 Szűcs Máté
Institutions:
1 Institute of Metallurgy, University of Miskolc, Miskolc, Hungary, EU, szabogabor@uni-miskolc.hu
2 Institute of Physical Metallurgy, Metallforming, and Nanotechnology, Miskolc, Hungary, EU, femmiko@uni-miskolc.hu, fempcs@uni-miskolc.hu, femszmat@uni-miskolc.hu
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
316-322
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
45 views / 11 downloads
Abstract

Aluminum plating technology is used worldwide, not only in the automotive industry but also in household items. The essence of the technology is that a layer with a certain property is plated with another layer with different properties. The understanding of the bond development is highly important, because these sheets have high added value. In this study the tear-off of three layer-plated aluminum sheets are investigated. The alloys applied in specific layers were as follows: AlMnMg025Si08 (core alloy) and AlSi12 (liner). The bonding was performed on a Von Roll experimental roll stand mill using hot rolling. The experimental temperature was 300 °C, respectively. Furthermore, this study covers the analysis of tear-off of bond of 3-layered aluminum sheets, for dynamically hardening liner layer and less dynamically hardening core sheets. In the simulation the core material was an AlMnMg025Si08 alloy, the liner was AlSi12. The material properties for the calculations come from material databases. Analyses were backed by means of finite element method as well as experimental way. The applied softwares were Simufact forming 14 included Simufact Material database and MSC Marc. The tear-off of bond was tested in one pass with various reductions, which were 1.33, 1.99, 2.66, 3.32, 6.64, 9.97, 13.29, 16.61, 19.93, 23.26 and 26.58 %, respectively, the deformation temperature was 300 °C. From the calculations we get six differential zones where the layers prolongation is different. It has a different effect on tear-off of bonded layers. If all passes are kept in the optimal reduction zones to avoid the tear-off of bonded layers.

Keywords: adhesives, rolling, plasticity, computer simulation, brazing, roll bonding, aluminium
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