Number of the records: 1  

Fracture behaviour of the 14Cr ODS steel exposed to helium and liquid lead

  1. 1.
    SYSNO ASEP0480409
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleFracture behaviour of the 14Cr ODS steel exposed to helium and liquid lead
    Author(s) Hojná, A. (CZ)
    Di Gabriele, F. (CZ)
    Hadraba, Hynek (UFM-A) RID, ORCID
    Husák, Roman (UFM-A)
    Kuběna, Ivo (UFM-A) RID, ORCID
    Rozumová, L. (CZ)
    Bublíková, P. (CZ)
    Kalivodová, J. (CZ)
    Matějíček, Jiří (UFP-V) RID, ORCID
    Number of authors9
    Source TitleJournal of Nuclear Materials. - : Elsevier - ISSN 0022-3115
    Roč. 490, JUL (2017), s. 143-154
    Number of pages12 s.
    Languageeng - English
    CountryNL - Netherlands
    KeywordsImpact fracture ; Microanalysis ; Nanostructured steel ; Oxidation ; Thermal ageing
    Subject RIVJG - Metallurgy
    OECD categoryMaterials engineering
    Subject RIV - cooperationInstitute of Plasma Physics - Metallurgy
    R&D ProjectsGA14-25246S GA ČR - Czech Science Foundation (CSF)
    GA14-12837S GA ČR - Czech Science Foundation (CSF)
    LQ1601 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
    Institutional supportUFM-A - RVO:68081723 ; UFP-V - RVO:61389021
    UT WOS000403132300017
    EID SCOPUS85018463374
    DOI10.1016/j.jnucmat.2017.03.049
    AnnotationThis work describes the fracture behaviour of the 14Cr ODS steel produced by mechanical alloying process, after high temperature exposures. Small specimens were exposed to helium gas in a furnace at 720 degrees C for 500 h. Another set of specimens was exposed to flowing liquid lead in the COLONRI II loop at 650 degrees C for 1000 h. All specimens were tested for the impact and tensile behaviour. The impact test results are compared to other sets of specimens in the as received state and after isothermal annealing at 650 degrees C for 1000 h. The impact curves of the exposed materials showed positive shifts on the transition temperature. While the upper shelf value did not change in the Pb exposed ODS steel, it significantly increased in the He exposed one. The differences are discussed in terms of surface and subsurface microscopy observation. The embrittlement can be explained as the effect of a slight change in the grain boundary and size distribution combined with the depletion of sub-surface region from alloying elements forming oxide scale on the surface.
    WorkplaceInstitute of Physics of Materials
    ContactYvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
    Year of Publishing2018
Number of the records: 1  

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