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Structure and properties of Fe-Al-Si alloy prepared by mechanical alloying
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SYSNO ASEP 0521276 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Structure and properties of Fe-Al-Si alloy prepared by mechanical alloying Author(s) Novák, P. (CZ)
Vaňka, T. (CZ)
Nová, K. (CZ)
Stoulil, J. (CZ)
Průša, F. (CZ)
Kopeček, Jaromír (FZU-D) RID, ORCID
Haušild, P. (CZ)
Laufek, František (FZU-D) RIDNumber of authors 8 Article number 2463 Source Title Materials. - : MDPI
Roč. 12, č. 15 (2019), s. 1-18Number of pages 18 s. Language eng - English Country CH - Switzerland Keywords iron silicide ; Fe-Al-Si alloy ; mechanical alloying ; spark plasma sintering ; characterization Subject RIV JG - Metallurgy OECD category Materials engineering R&D Projects GA17-07559S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 000482576900124 EID SCOPUS 85070592661 DOI 10.3390/ma12152463 Annotation Fe–Al–Si alloys have been previously reported as an interesting alternative to common high-temperature materials. This work aimed to improve the properties of FeAl20Si20 alloy (in wt.%) by the application of powder metallurgy process consisting of ultrahigh-energy mechanical alloying and spark plasma sintering. The material consisted of Fe3Si, FeSi, and Fe3Al2Si3 phases. It was found that the alloy exhibits an anomalous behaviour of yield strength and ultimate compressive strength around 500 °C, reaching approximately 1100 and 1500 MPa, respectively. The results also demonstrated exceptional wear resistance, oxidation resistance, and corrosion resistance in water-based electrolytes. The tested manufacturing process enabled the fracture toughness to be increased ca. 10 times compared to the cast alloy of the same composition. Due to its unique properties, the material could be applicable in the automotive industry for the manufacture of exhaust valves, for wear parts, and probably as a material for selected aggressive chemical environments. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2020 Electronic address http://hdl.handle.net/11104/0305908
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