MECHANICAL PROPERTIES OF MG-RE ALLOYS STUDIED BY ACOUSTIC EMISSION

1,2 ČAPEK Jan
Co-authors:
1 SZABÓOVÁ Andrea 1 MÁTHIS Kristián
Institutions:
1 Department of Physics of Materials, Charles University, Prague, Czech Republic, EU, ajan.capek89@gmail.com, bszaboandika997@freemail.hu, cmathis@met.mff.cuni.cz
2 Lab Neutron Scattering & Imaging, Paul ScherrerInstitut, Villigan, Switzerland
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
1740-1745
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
24 views / 7 downloads
Abstract

In this paper the effect of grain size and gadolinium content on mechanical properties was studied. The Mg-Gd binary alloy with broad range of Gd concentrations (0.4 to 4.2 wt.%) and grain size (15 to 500 μm) were used. Concurrent measurement of acoustic emission was used to better understand deformation mechanisms. The Hall-Petch parameters for Mg15Gd alloy were measured. Significant differences between the alloys were observed. The twin growth is most pronounced in Mg04Gd alloy, Mg15Gd exhibits generally lower twinning activity and Mg42Gd alloy exhibits limited twin growth and nucleation of many thin twins.

Keywords: Magnesium, acoustic emission, mechanical testing, twinning
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