Název: Mechanical properties of WN43 magnesium alloy prepared by spark plasma sintering
Autoři: Knapek, Michal ; Minárik, P. ; Greš, A. ; Zemková, M. ; Cinert, Jakub ; Král, R.
Typ dokumentu: Příspěvky z konference
Konference/Akce: Metal 2019 - 28th International Conference on Metallurgy and Materials, Brno (CZ), 20190522
Rok: 2019
Jazyk: eng
Abstrakt: 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 degrees 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.
Klíčová slova: acoustic emission; deformation; magnesium; spark plasma sintering; twinning
Číslo projektu: EF16_013/0001794
Poskytovatel projektu: GA MŠk
Zdrojový dokument: METAL 2019 - 28th International Conference on Metallurgy and Materials, Conference Proceedings, ISBN 978-80-87294-92-5

Instituce: Ústav jaderné fyziky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0309636

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-438246


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav jaderné fyziky
Konferenční materiály > Příspěvky z konference