Hydro-mechanical deep drawing of rolled magnesium sheets

verfasst von
Friedrich-Wilhelm Bach, Bernd-Arno Behrens, Michael Rodman, Oliver Vogt, Arne Roßberg
Abstract

Magnesium sheets offer high specific properties which make them very attractive in modern light weight constructions. The main obstacles for a wider usage are their high production costs, the poor corrosion properties and the limited ductility. Until today, forming processes have to be conducted at temperatures well above T = 220 °C. In the first place, this is a cost factor. Moreover, technical aspects, such as grain growth or the limited use of lubrication speak against high temperatures. The first aim of the presented research work is to increase the ductility at lower temperatures by alloy modification and by an adapted rolling technology. The key factor to reach Isotropic mechanical properties and increased limit drawing ratios in deep drawing tools, is to achieve fine, homogeneous microstructures. This can be done by cross rolling at moderate temperatures. The heat treatment has to be adapted accordingly. In a second stage, hydro-mechanical deep drawing experiments were carried out at elevated temperature. The results show that the forming behaviour of the tested Mg-alloys is considerably improved compared to conventional deep drawing.

Organisationseinheit(en)
Institut für Umformtechnik und Umformmaschinen
Typ
Artikel
Journal
Steel research international
Band
76
Seiten
930-934
Anzahl der Seiten
5
ISSN
1611-3683
Publikationsdatum
12.2005
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Physik der kondensierten Materie, Physikalische und Theoretische Chemie, Metalle und Legierungen, Werkstoffchemie
Elektronische Version(en)
https://doi.org/10.1002/srin.200506119 (Zugang: Geschlossen)
 

Details im Forschungsportal „Research@Leibniz University“