X-ray diffraction, optical microscopy, and microhardness studies of gas nitrided titanium alloys and titanium aluminide

Wei Sha, M.A. Haji Mat Don, A. Mohamed, X. Wu, B. Siliang, A. Zhecheva

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    20 Citations (Scopus)
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    Abstract

    Thermochemical surface gas nitriding of ß21s, Timetal 205 and a Ti–Al alloy was conducted using differential scanning calorimeter equipment, in nominally pure nitrogen at 850 °C and 950 °C (ß21s), 730 °C and 830 °C (Timetal 205), and 950 °C and 1050 °C (Ti–Al) for 1 h, 3 h and 5 h. X-ray diffraction analyses showed new phases formed in the nitrided layer, depending on the alloy and the time and the temperature of nitriding. Microstructures were analyzed using optical microscopy. Cross-sectional microhardness profiles of cross-sectional samples after nitriding were obtained using a Knoop indenter.
    Original languageEnglish
    Pages (from-to)229-240
    Number of pages12
    JournalMaterials Characterization
    Volume59
    Issue number3
    DOIs
    Publication statusPublished - Mar 2008

    Bibliographical note

    Teaching or Research: 15147

    ASJC Scopus subject areas

    • Materials Science(all)

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