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Fracture toughness of the new generation ODS steels with different oxide composition
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SYSNO ASEP 0466529 Document Type O - Others R&D Document Type Others Title Fracture toughness of the new generation ODS steels with different oxide composition Author(s) Šiška, Filip (UFM-A) RID, ORCID
Stratil, Luděk (UFM-A) ORCID
Hadraba, Hynek (UFM-A) RID, ORCID
Šmíd, Miroslav (UFM-A) RID, ORCID
Luptáková, Natália (UFM-A) RID, ORCID
Záležák, Tomáš (UFM-A) RID, ORCID
Bártková, Denisa (UFM-A)
Fintová, Stanislava (UFM-A) ORCID
Puchý, V. (SK)Number of authors 9 Year of issue 2016 Language eng - English Country CZ - Czech Republic Keywords mechanical alloying ; ODS ; tensile ; fracture toughness ; yttria ; alumina Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GJ15-21292Y GA ČR - Czech Science Foundation (CSF) GA14-25246S GA ČR - Czech Science Foundation (CSF) Institutional support UFM-A - RVO:68081723 Annotation The ferritic high-Cr oxide dispersion strengthened (ODS) steels were developed as structural tubing material for fast breeder reactors. These steels are nowadays structural materials of first choice for future nuclear power sources. ODS steels contain small amounts (about 0.25 wt.%) of homogeneously dispersed nano-size yttria particles, to increase the creep strength of the steel. The most common oxide dispersion in ODS steels is created by yttria adding due to very good thermal stability of these oxides. However there are possibilities to choose different oxides or create precipitates by different preparation route, i.e. internal oxidation of elements added to the steel composition. In this work mechanical and fracture behaviour of 9%Cr steels prepared of different chemical composition strengthened by yttria and alumina nano-precipitates was investigated. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2017
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