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Effect of initial powders on properties of FeAlSi intermetallics
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SYSNO ASEP 0522773 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effect of initial powders on properties of FeAlSi intermetallics Author(s) Čech, J. (CZ)
Haušild, P. (CZ)
Karlík, M. (CZ)
Bouček, V. (CZ)
Nová, K. (CZ)
Průša, F. (CZ)
Novák, P. (CZ)
Kopeček, Jaromír (FZU-D) RID, ORCIDNumber of authors 8 Article number 2846 Source Title Materials. - : MDPI
Roč. 12, č. 18 (2019), s. 1-16Number of pages 16 s. Language eng - English Country CH - Switzerland Keywords FeAlSi ; intermetallic alloys ; mechanical alloying ; spark plasma sintering ; microstructure ; nanoindentation ; mechanical properties 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 000489126600005 EID SCOPUS 85072575777 DOI 10.3390/ma12182846 Annotation FeAlSi intermetallics are materials with promising high-temperature mechanical properties and oxidation resistance. Nevertheless, their production by standard metallurgical processes is complicated. In this study, preparation of powders by mechanical alloying and properties of the samples compacted by spark plasma sintering was studied. Various initial feedstock materials were mixed to prepare the material with the same chemical composition. Time of mechanical alloying leading to complete homogenization of powders was estimated based on the microstructure observations, results of XRD and indentation tests. Microstructure, phase composition, hardness and fracture toughness of sintered samples was studied and compared with the properties of powders before the sintering process. It was found that independently of initial feedstock powder, the resulting phase composition was the same (Fe3Si + FeSi). The combination of hard initial powders required the longest milling time, but it led to the highest values of fracture toughness. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2020 Electronic address http://hdl.handle.net/11104/0307212
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