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Properties of (Ti,Nb)Al–(Ti,Nb).sub.5./sub.Si.sub.3./sub. eutectic composite
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SYSNO ASEP 0342152 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Properties of (Ti,Nb)Al–(Ti,Nb)5Si3 eutectic composite Author(s) Vojtěch, D. (CZ)
Lejček, Pavel (FZU-D) RID, ORCID, SAI
Kopeček, Jaromír (FZU-D) RID, ORCID
Bialasová, K. (CZ)
Guhlová, P. (CZ)Source Title Composite Structures. - : Elsevier - ISSN 0263-8223
Roč. 92, č. 6 (2010), s. 1440-1448Number of pages 8 s. Language eng - English Country GB - United Kingdom Keywords intermetallic ; eutectic ; high-temperature material ; directional crystallization ; oxidation ; mechanical properties Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects IAA200100902 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z10100520 - FZU-D (2005-2011) UT WOS 000275244900017 DOI 10.1016/j.compstruct.2009.11.010 Annotation Ti–40Al–5Si and Ti–39Al–5Si–2Nb (in at.%) alloys were studied as prospective high-temperature structural composites consisting of γ-(Ti,Nb)Al + α2-(Ti,Nb)3Al matrix and Ti5Si3 reinforcement. The alloys were prepared by arc melting under helium. Oxidation resistance was studied at 900 °C in air. Thermal stability of alloys was investigated by measuring room temperature hardness and compressive strength after long-term annealing at 900 °C. To prepare oriented composites, directional crystallization at rates of 5–115 mm/h was carried out by the floating zone technique. It was observed that the addition of 2% Nb to the Ti–40Al–5Si alloy does not modify eutectic structure. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2011
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