Počet záznamů: 1
AE42 magnesium alloy prepared by spark plasma sintering
- 1.
SYSNO ASEP 0498239 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název AE42 magnesium alloy prepared by spark plasma sintering Tvůrce(i) Minárik, P. (CZ)
Stráský, J. (CZ)
Vesely, J. (CZ)
Lukáč, František (UFP-V) ORCID
Hadzima, B. (SK)
Král, R. (CZ)Celkový počet autorů 6 Zdroj.dok. Journal of Alloys and Compounds. - : Elsevier - ISSN 0925-8388
Roč. 742, 25 April 2018 (2018), s. 172-179Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova magnesium ; powder ; sintering ; microstructure ; precipitates Vědní obor RIV JG - Hutnictví, kovové materiály Obor OECD Materials engineering CEP GA15-15609S GA ČR - Grantová agentura ČR Institucionální podpora UFP-V - RVO:61389021 UT WOS 000427505800023 EID SCOPUS 85041663000 DOI 10.1016/j.jallcom.2018.01.115 Anotace Rare-earth containing magnesium alloy AE42 was prepared by powder metallurgy technique of spark plasma sintering for the first time. The effect of sintering parameters on the microstructure, precipitation of secondary particles and mechanical properties was investigated. The gas-atomized AE42 alloy powder was sintered at three different temperatures of 450 degrees C, 500 degrees C and 550 degrees C for three minutes, which was sufficient to achieve almost full density. Despite the negligible effect of the sintering temperature on the grain size, sintering had a pronounced effect on the Al11RE3 secondary phase particles. Fine eutectic lamellar structure of Al11RE3 in gas-atomized powder transformed to almost globular particles during SPS and size of these secondary phase particles increased with increasing sintering temperature. As the result, SPS temperature had significant effect on the mechanical strength of the material via altering the size and morphology of Al11RE3 particles. Sintered material was compared with the gas-atomized powder subsequently annealed at 550 degrees C. It was found that the kinetics of the globularization of the Al11RE3 secondary phase particles is much faster during spark plasma sintering than during conventional annealing at the same temperature. This can be associated with increased diffusivity along the matrix/precipitate interface or possibly with locally increased temperature due to electron transport. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2019 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0925838818301166?via%3Dihub
Počet záznamů: 1