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Nanocrystalline Al7075+1 wt % Zr Alloy Prepared Using Mechanical Milling and Spark Plasma Sintering.
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SYSNO ASEP 0480207 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Nanocrystalline Al7075+1 wt % Zr Alloy Prepared Using Mechanical Milling and Spark Plasma Sintering. Tvůrce(i) Molnárová, O. (CZ)
Málek, P. (CZ)
Veselý, J. (CZ)
Šlapáková, M. (CZ)
Minárik, P. (CZ)
Lukáč, František (UFP-V) ORCID
Chráska, Tomáš (UFP-V) RID, ORCID
Novák, P. (CZ)
Průša, F. (CZ)Číslo článku 1105 Zdroj.dok. Materials. - : MDPI
Roč. 10, č. 9 (2017)Poč.str. 20 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova gas atomization ; mechanical milling ; spark plasma sintering ; microstructure ; microhardness ; recrystallization 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 000411506700112 EID SCOPUS 85029815823 DOI 10.3390/ma10091105 Anotace The microstructure, phase composition, and microhardness of both gas-atomized and mechanically milled powders of the Al7075 + 1 wt % Zr alloy were investigated. The gas-atomized powder exhibited a cellular microstructure with layers of intermetallic phases along the cell boundaries. Mechanical milling resulted in a grain size reduction to the nanocrystalline range along with an increase of the powder microhardness. Compacts prepared by spark plasma sintering (SPS) exhibited negligible porosity. The grain size of the originally gas-atomized material was retained, but the continuous layers of intermetallic phases were replaced by individual particles. Recrystallization led to a grain size increase in the SPS compact prepared from the originally milled powder. Small precipitates of the Al3Zr phase in the SPS compacts are responsible for the retainment of the sub-microcrystalline microstructure during SPS. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2018
Počet záznamů: 1