EFFECT OF EQUAL CHANNEL ANGULAR PRESSING ON TWIN-ROLL CAST AZ31 MAGNESIUM STRIP

1 ZIMINA Mariia
Co-authors:
1 POKOVÁ Michaela 2 BOHLEN Jan 2 KURZ Geritt 2 LETZIG Dietmar 1 CIESLAR Miroslav
Institutions:
1 Charles University in Prague, Faculty of Mathematics and Physics, Ke Karlovu 3, 12116 Prague 2, Czech Republic, e-mail: m.zimina@seznam.cz
2 Magnesium Innovation Centre (MagIC) Helmholtz-Zentrum Geesthacht, Max-Planck-Str.1, D21502, Geesthacht, Germany
Conference:
24th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, June 3rd - 5th 2015
Proceedings:
Proceedings 24th International Conference on Metallurgy and Materials
Pages:
1258-1262
ISBN:
978-80-87294-58-1
ISSN:
2694-9296
Published:
12th January 2015
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
45 views / 9 downloads
Abstract

Twin-roll casting is a technique which allows production of high quality thin magnesium alloys strips with enhanced microstructure. However, further treatment using severe plastic deformation or annealing is required to improve mechanical properties of strips. Equal channel angular pressing is a very effective tool for grain refinement. In the present study the effect of annealing on the microstructure of twin-roll cast AZ31 magnesium alloy strip after equal channel angular pressing was studied. A significant grain refinement occurs already after two passes in both as-cast and aged alloys. Light and scanning electron microscopy were used for microstructure observations. The evolution of mechanical properties was investigated using Vickers microhardness measurements. The increase of microhardness with increasing number of ECAP passes was observed.

Keywords: magnesium alloy, twin-roll casting, ECAP

© 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.

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