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The investigation of an Al-Zr-Ti alloy prepared by spark plasma sintering of atomized powder
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SYSNO ASEP 0503785 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title The investigation of an Al-Zr-Ti alloy prepared by spark plasma sintering of atomized powder Author(s) Molnárová, O. (CZ)
Málek, P. (CZ)
Lukáč, František (UFP-V) ORCID
Chráska, Tomáš (UFP-V) RID, ORCID
Cinert, Jakub (UFP-V)Number of authors 5 Article number 133486 Source Title METAL 2017. 26th International Conference on Metallurgy and Materials. Conference Proceedings. - Ostrava : TANGER, 2017 - ISBN 978-80-87294-79-6 Pages 2017-january (2017), s. 1606-1612 Number of pages 6 s. Publication form Medium - C Action 26th International Conference on Metallurgy and Materials Event date 24.05.2017 - 26.05.2017 VEvent location Brno Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords Gas atomization ; High strength alloy ; Spark plasma sintering ; Thermal stability Subject RIV JG - Metallurgy OECD category Materials engineering R&D Projects GA15-15609S GA ČR - Czech Science Foundation (CSF) Institutional support UFP-V - RVO:61389021 UT WOS 000434346900259 EID SCOPUS 85043381358 Annotation 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. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2020
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