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Synthesis of intermetallics in Fe-Al-Si system by mechanical alloying
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SYSNO ASEP 0505321 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Synthesis of intermetallics in Fe-Al-Si system by mechanical alloying Author(s) Nová, K. (CZ)
Novák, P. (CZ)
Průša, F. (CZ)
Kopeček, Jaromír (FZU-D) RID, ORCID
Čech, J. (CZ)Number of authors 5 Article number 20 Source Title Metals. - : MDPI
Roč. 9, č. 1 (2019), s. 1-14Number of pages 14 s. Language eng - English Country CH - Switzerland Keywords powder metallurgy ; intermetallics ; mechanical alloying ; iron aluminide ; iron silicide Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects GA17-07559S GA ČR - Czech Science Foundation (CSF) EF16_013/0001406 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 000459738500020 EID SCOPUS 85059372683 DOI 10.3390/met9010020 Annotation Fe-Al-Si alloys have been recently developed in order to obtain excellent high-temperature mechanical properties and oxidation resistance. However, their production by conventional metallurgical processes is problematic. In this work, an innovative processing method, based on ultra-high energy mechanical alloying, has been tested for the preparation of these alloys. It has been found that the powders of low-silicon alloys (up to 10 wt. %) consist of FeAl phase supersaturated by Si after mechanical alloying. Fe2Al5 phase forms as a transient phase at the initial stage of mechanical alloying. The alloy containing 20 wt. % of Si and 20 wt. % of Al is composed mostly of iron silicides (Fe3Si and FeSi) and FeAl ordered phase. Thermal stability of the mechanically alloyed powders was studied in order to predict the sintering behavior during possible compaction via spark plasma sintering or other methods. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2020 Electronic address http://hdl.handle.net/11104/0296779
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