INVESTIGATION OF DEFORMATION MECHANISMS IN TEXTURED MAGNESIUM ALLOY

1 DITTRICH Jana
Co-authors:
1,2 ČAPEK Jan 1,3 KNAPEK Michal 1 MINÁRIK Peter
Institutions:
1 Department of Physics of Materials, Charles University, Prague, Czech Republic, EU, dittrich.jan@gmail.com, jan.capek@gmail.com, knapek@karlov.mff.cuni.cz, peter.minarik@mff.cuni.cz
2 Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, Villigen, Switzerland
3 Nuclear Physics Institute, The Czech Academy of Sciences, Řež 130, 250 68 Řež, Czech Republic, EU
Conference:
28th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 22nd - 24th 2019
Proceedings:
Proceedings 28th International Conference on Metallurgy and Materials
Pages:
1302-1307
ISBN:
978-80-87294-92-5
ISSN:
2694-9296
Published:
4th November 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
39 views / 14 downloads
Abstract

Advanced in-situ and ex-situ methods were used to reveal active deformation mechanisms during deformation of magnesium alloy with a strong texture. Three sets of samples were prepared from the rolled sheet of commercial AZ31 alloy with respect to its strong basal texture – normal direction (ND), rolling direction (RD) and 45° between RD and ND, and were deformed in both compression and tension. The signal of acoustic emission (AE) was measured concurrently during the deformation. Electron backscattered diffraction (EBSD) was used to study the microstructure after the selected stages of the deformation. It is shown that the extension twinning played an important role during the plastic deformation in the samples having favorably oriented basal texture component, whereas in the unfavorably oriented samples, the role of twinning was marginal. Pronounced activation of twinning only in some samples caused a considerable variation in the deformation behavior and AE response. A consistent link between the energy and amplitudes of the AE signal and the microstructure changes investigated by EBSD was established.

Keywords: Magnesium, deformation, twinning, acoustic emission, EBSD
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