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Processing Effects on the Formability of Magnesium Alloy Sheets

1
Magnesium Innovation Centre (MagIC), Helmholtz-Zentrum Geesthacht, Max-Planck Str. 1, D 21502 Geesthacht, Germany
2
Department of Physics of Materials, Charles University, Ke Karlovu 5, CZ 121 16 Prague 2, Czech Republic
3
Extrusion Research & Development Center, TU Berlin, Gustav-Meyer-Allee 25, D 13355 Berlin, Germany
*
Author to whom correspondence should be addressed.
Metals 2018, 8(2), 147; https://doi.org/10.3390/met8020147
Received: 31 January 2018 / Revised: 16 February 2018 / Accepted: 19 February 2018 / Published: 23 February 2018
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Abstract

As a generalized semi-finished product, the use of magnesium sheets requires addressing two major aspects of their processing: their microstructure and texture control, which are both essential for the forming behavior of such sheets during their forming to parts. Further, the processing of such sheets is complex, and therefore expensive, and requires simplification. In this work, magnesium alloys AZ31, ZE10, and ME21 are investigated in the form of conventionally rolled sheets, as well as in the form of extruded sheets. Their microstructural and textural development are correlated to their mechanical and forming properties. During extrusion, strong textures develop that hinder stretch-forming operations, even in rare earth-containing alloys. Chemical composition and process parameters have a significant impact on the texture development, and enable the design of sheet materials with weak textures and potentially enhanced formability. View Full-Text
Keywords: magnesium alloys; rolling; extrusion; sheet; forming limit curves; Electron backscatter diffraction (EBSD) magnesium alloys; rolling; extrusion; sheet; forming limit curves; Electron backscatter diffraction (EBSD)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Bohlen, J.; Cano, G.; Drozdenko, D.; Dobron, P.; Kainer, K.U.; Gall, S.; Müller, S.; Letzig, D. Processing Effects on the Formability of Magnesium Alloy Sheets. Metals 2018, 8, 147.

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