High-temperature embrittlement of ferritic ODS steels in Pb/Pb-Bi coolants

0385479 - ÚFM 2013 RIV SK eng A - Abstract
Hadraba, Hynek - Stratil, Luděk - Dlouhý, Ivo - Hojná, A. - Di Gabriele, F.
High-temperature embrittlement of ferritic ODS steels in Pb/Pb-Bi coolants.
Fraktografia 2012. Košice: Institute of Materials Research of the Slovak Academy of Sciences in Košice, 2012 - (Ballóková, B.; Hvizdoš, P.). s. 12. ISBN 978-80-970964-2-7.
[Fraktografia 2012. 21.10.2012-24.10.2012, Stará Lesná]
R&D Projects: GA ČR(CZ) GAP108/10/0466
Institutional support: RVO:68081723
Keywords : oxide dispersion strengthened * impact behaviour * KLST
Subject RIV: JG - Metallurgy

The oxide dispersion strengthened steels (ODS) are consider as a structural material of the proposed future nuclear energy production systems developed: i) the generation IV fission reactors, ii) fusion reactors and iii) spallation neutron sources. Several of these future concepts foresee the use of lead-based coolant (lead-cooled fast reactor and spallation target), as well as for breeder carrying material (helium-cooled lithium-lead fusion reactor). Compatibility of structural materials working at the limiting conditions in heavy liquid metal (Pb-based) environments is a very important issue. The embrittlement of the steel was explained by the porosity development and precipitates coarsening in the bulk of the steel and intercrystalline corrosion of the surface of the steel during long-time high-temperature exposition in liquid metals.
Permanent Link: http://hdl.handle.net/11104/0215255