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Properties of Mechanically Alloyed W-Ti Materials with Dual Phase Particle Dispersion

  1. 1.
    SYSNO ASEP0474189
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleProperties of Mechanically Alloyed W-Ti Materials with Dual Phase Particle Dispersion
    Author(s) Lukáč, František (UFP-V) ORCID
    Vilémová, Monika (UFP-V) RID, ORCID
    Nevrlá, Barbara (UFP-V) RID
    Klečka, Jakub (UFP-V) ORCID
    Chráska, Tomáš (UFP-V) RID, ORCID
    Molnárová, O. (CZ)
    Article number3
    Source TitleMetals. - : MDPI
    Roč. 7, č. 1 (2017)
    Number of pages10 s.
    Publication formPrint - P
    Languageeng - English
    CountryCH - Switzerland
    Keywordstungsten-titanium alloys ; mechanical alloying ; particle dispersion ; pulsed electric current sintering ; thermal conductivity ; bending strength
    Subject RIVJJ - Other Materials
    OECD categoryMaterials engineering
    R&D ProjectsGA15-15609S GA ČR - Czech Science Foundation (CSF)
    Institutional supportUFP-V - RVO:61389021
    UT WOS000396509900003
    EID SCOPUS85009743259
    DOI10.3390/met7010003
    AnnotationIn the presented study, we report on the preparation and properties of mechanically alloyed W-Ti powders compacted by pulsed electric current sintering. Four different powder compositions of W-(3%–7%)Ti with Hf or HfC were prepared. The alloys structure contains only high-melting-point phases, namely the W-Ti matrix, complex carbide (Ti,W,Hf)C and HfO2 particle dispersion, Ti in the form of a separate phase is not present. The bending strength of the alloys depends on the amount of Ti added. The addition of 3 wt. % Ti led to an increase whereas 7 wt. % Ti led to a major decrease in strength when compared to unalloyed tungsten sintered at similar conditions. The addition of Ti significantly lowered the room-temperature thermal conductivity of all prepared materials. However, unlike pure tungsten, the conductivity of the prepared alloys increased with the temperature. Thus, the thermal conductivity of the alloys at 1300 °C approached the value of the unalloyed tungsten.
    WorkplaceInstitute of Plasma Physics
    ContactVladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975
    Year of Publishing2018
Number of the records: 1  

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