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Fatigue Behaviour and Crack Initiation in CoCrFeNiMn High-Entropy Alloy Processed by Powder Metallurgy

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    SYSNO ASEP0510156
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleFatigue Behaviour and Crack Initiation in CoCrFeNiMn High-Entropy Alloy Processed by Powder Metallurgy
    Author(s) Chlup, Zdeněk (UFM-A) RID, ORCID
    Fintová, Stanislava (UFM-A) ORCID
    Hadraba, Hynek (UFM-A) RID, ORCID
    Kuběna, Ivo (UFM-A) RID, ORCID
    Vilémová, Monika (UFP-V) RID, ORCID
    Matějíček, Jiří (UFP-V) RID, ORCID
    Number of authors6
    Article number1110
    Source TitleMetals. - : MDPI
    Roč. 9, č. 10 (2019)
    Number of pages11 s.
    Languageeng - English
    CountryCH - Switzerland
    Keywordshigh entropy alloy ; microstructure ; spark plasma sintering ; fatigue ; grain size
    Subject RIVJG - Metallurgy
    OECD categoryMaterials engineering
    Subject RIV - cooperationInstitute of Plasma Physics
    R&D ProjectsGA17-23964S GA ČR - Czech Science Foundation (CSF)
    Method of publishingOpen access
    Institutional supportUFM-A - RVO:68081723 ; UFP-V - RVO:61389021
    UT WOS000498219400089
    EID SCOPUS85074239473
    DOI10.3390/met9101110
    AnnotationOxide dispersion-strengthened (ODS) materials contain homogeneous dispersions of temperature-stable nano-oxides serving as obstacles for dislocations and further pinning of grain boundaries. The strategy for dispersion strengthening based on complex oxides (Y-Hf, -Zr, -Ce, -La) was developed in order to refine oxide dispersion to enhance the dispersion strengthening effect. In this work, the strengthening of EUROFER steel by complex oxides based on Y and elements of the IIIB group (lanthanum, scandium) and IVB group (cerium, hafnium, zirconium) was explored. Interparticle spacing as a dispersoid characteristic appeared to be an important factor in controlling the dispersion strengthening contribution to the yield strength of ODS EUROFER steels. The dispersoid size and average grain size of ODS EUROFER steel were altered in the ranges of 5–13 nm and 0.6–1.7 m, respectively. Using this strategy, the yield strength of the prepared alloys varied between 550 MPa and 950 MPa depending on the doping element.
    WorkplaceInstitute of Physics of Materials
    ContactYvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
    Year of Publishing2020
    Electronic addresshttps://www.mdpi.com/2075-4701/9/10/1110/htm
Number of the records: 1  

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