MECHANICAL PROPERTIES OF WN43 MAGNESIUM ALLOY PREPARED BY SPARK PLASMA SINTERING

1,2 KNAPEK Michal
Co-authors:
1 MINÁRIK Peter 1 GREŠ Adam 1 ZEMKOVÁ Mária 3 CINERT Jakub 1 Král Robert
Institutions:
1 Department of Physics of Materials, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic, EU, knapek@karlov.mff.cuni.cz, peter.minarik@mff.cuni.cz, adam.gres1@gmail.com, 1zemkova.maria1@gmail.com, rkral@met.mff.cuni.cz
2 Nuclear Physics Institute, The Czech Academy of Sciences, Řež 130, 250 68 Řež, Czech Republic, EU
3 Institute of Plasma Physics, The Czech Academy of Science, Za Slovankou 3, 18 200 Prague 8, Czech Republic, EU, cinert@ipp.cas.cz
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:
1535-1540
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:
33 views / 12 downloads
Abstract

The spark plasma sintering (SPS) method was used to prepare bulk materials form WN43 magnesium alloy atomized powder. Compression tests were carried out in order to investigate the effect of different sintering regimes (10 min at 400, 450, or 500 °C) on the mechanical properties of the material. Furthermore, complementary in-situ acoustic emission (AE) recording was employed to reveal the dynamics of deformation processes during compression. It was shown that by increasing the sintering temperature, the ultimate compressive strength and ductility were significantly improved. The AE data and microstructure observations suggest that pronounced twin nucleation takes place around the yield point whereas twin growth and dislocation activity are the dominant deformation mechanisms in the later stages of deformation.

Keywords: Spark plasma sintering, magnesium, deformation, twinning, acoustic emission
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