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Study of as-cast Nb-Ru samples

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    0502076 - FZÚ 2019 RIV GB eng J - Journal Article
    Samal, Sneha Manjaree - Cornish, L. A.
    Study of as-cast Nb-Ru samples.
    MRS Advances. Roč. 3, č. 34-35 (2018), s. 1949-1953. ISSN 2059-8521
    Institutional support: RVO:68378271
    Keywords : phase equilibria * Nb * scanning electron microscopy (SEM) * X-ray diffraction (XRD)
    OECD category: Construction engineering, Municipal and structural engineering

    The Nb-Ru system is of interest because the ∼NbRu phase has potential for high temperature shape memory alloys. Previous workers have identified the phase transformation variously as involving twinning, of cubic-to-tetragonal and tetragonal–to-orthorhombic (or monoclinic) transformations. As well as the terminal (Nb) and (Ru) solid solutions, two intermetallic phases have been identified: ∼NbRu and ∼NbRu3 / ∼Nb3Ru5 / ∼NbRu2, but the boundaries between the different phases are still not fully established. This investigation looked at six as-cast alloys of different compositions across the Nb-Ru system, which were made from 99.95 % purity Nb and Ru. The samples were made by arc-melting under an argon atmosphere, using titanium as an oxygen-getter. These samples were sectioned and prepared metallographically for optical microscopy, SEM and XRD analyses, the latter using an X’pert database.
    Permanent Link: http://hdl.handle.net/11104/0294019

     
     
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