ROLLED AL-MG-SC ALLOY STUDIED BY TRANSMISSION ELECTRON MICROSCOPY

1 KŘIVSKÁ Barbora
Co-authors:
1 ŠLAPÁKOVÁ Michaela 1 BAJER Jan 2 GRYDIN Olexandr 1 CIESLAR Miroslav
Institutions:
1 Charles University, Faculty of Mathematics and Physics, Ke Karlovu 5, Praha 2, Czech Republic, slapakova@karlov.mff.cuni.cz
2 University Paderborn, Faculty of Mechanical Engineering, Lehrstuhl für Werkstoffkunde Microscopy, Pohlweg 47-49, 33098 Paderborn, Germany
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
1800-1805
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
24 views / 16 downloads
Abstract

Twin-roll cast Al-Mg-Sc alloy was submitted to deformation by cold-rolling. The influence of heat treatment 300 °C / 8 h, which was applied either before or after the deformation, on the deformation microstructure was studied by the means of scanning and transmission electron microscopy and by microhardness measurements. The cold-rolling leads to increase of dislocation density and fragmentation of the grains into subgrains. Annealing both before and after deformation causes precipitation hardening of the material. The in-situ annealing in transmission electron microscope leads to rearrangement of dislocations and partial recrystallization of the microstructure.

Keywords: Al-Mg alloys, Al3(Sc,Zr) precipitates, electron microscopy, heat treatment
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