Název: The investigation of an Al-Zr-Ti alloy prepared by spark plasma sintering of atomized powder
Autoři: Molnárová, O. ; Málek, P. ; Lukáč, František ; Chráska, Tomáš ; Cinert, Jakub
Typ dokumentu: Příspěvky z konference
Konference/Akce: 26th International Conference on Metallurgy and Materials, Brno (CZ), 20170524
Rok: 2017
Jazyk: eng
Abstrakt: The microstructure and mechanical properties of a powder metallurgical Al-Zr-Ti alloy was studied. Fine powder with a typical size below 50 ?m was prepared by gas atomization. The smallest powder particles with a diameter below 10 ?m exhibited a segregation free microstructure. Larger droplets were found to contain intermetallic particles rich in Zr and Ti. The gas atomized powder was consolidated by spark plasma sintering (SPS) at various temperatures ranging from 450 to 550 °C. During SPS the materials microstructure remained nearly unchanged and a fine grain size between 2 and 3 ?m was observed. All SPS samples exhibited a microhardness of around 90 HV. The annealing (1 h, 500 °C) of the sample sintered at the highest temperature (550 °C) resulted in a decrease of microhardness to 75 HV as a result of changes in the phase composition, the fine grain size was retained. Natural aging at room temperature was not observed.
Klíčová slova: Gas atomization; High strength alloy; Spark plasma sintering; Thermal stability
Číslo projektu: GA15-15609S (CEP)
Poskytovatel projektu: GA ČR
Zdrojový dokument: METAL 2017. 26th International Conference on Metallurgy and Materials. Conference Proceedings, ISBN 978-80-87294-79-6

Instituce: Ústav fyziky plazmatu AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0295560

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-394149


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