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Development of advanced Fe–Al–O ODS alloy\nmicrostructure and properties due to heat treatment
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SYSNO ASEP 0534784 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Development of advanced Fe–Al–O ODS alloy
microstructure and properties due to heat treatmentAuthor(s) Fintová, Stanislava (UFM-A) ORCID
Kuběna, Ivo (UFM-A) RID, ORCID
Luptáková, Natália (UFM-A) RID, ORCID
Jarý, Milan (UFM-A)
Šmíd, Miroslav (UFM-A) RID, ORCID
Stratil, Luděk (UFM-A) ORCID
Šiška, Filip (UFM-A) RID, ORCID
Svoboda, Jiří (UFM-A) RID, ORCIDNumber of authors 8 Source Title Journal of Materials Research. - : Springer - ISSN 0884-2914
Roč. 35, č. 20 (2020), s. 2789-2797Number of pages 9 s. Language eng - English Country US - United States Keywords microstructure ; mechanical alloying ; scanning electron microscopy (SEM) Subject RIV JG - Metallurgy OECD category Materials engineering R&D Projects LQ1601 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UFM-A - RVO:68081723 UT WOS 000595594900015 EID SCOPUS 85094947750 DOI 10.1557/jmr.2020.278 Annotation Fe–Al–O ODS alloy prepared via mechanical alloying was subjected to three different heat treatments. Material
basic state exhibited a fine-grained (300–500 nm) microstructure with fine dispersion of aluminum oxide particles
(60% up to 20 nm). Heat treatment at 1100 °C for 3 h resulted in local grain and particles coarsening.
Prolongation of the heat treatment to 24 h resulted in further grain (50 % up to 5 μm) and particle (25 % with
size 25–40 nm) coarsening. Annealing at 1200 °C for 24 h led to a bimodal microstructure (35 % of grains with
size 100–250 μm and 45 % of particles with size 30–60 nm) and substantial oxide particle coarsening.
Microstructural changes resulted in tensile strength decrease and ductility increase. Tensile tests at 800 °C
revealed a 90% decrease of tensile strength while ductility increased 4–6 times when compared to the room
temperature tests. The hardening ratio was below 10 % for all the alloys and both test temperatures.Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2021 Electronic address https://www.cambridge.org/core/journals/journal-of-materials-research/article/abs/development-of-advanced-fealo-ods-alloy-microstructure-and-properties-due-to-heat-treatment/A3DE7A6CED71C31F834E96316FFAA7B9
Number of the records: 1