On the mechanical properties of TiNb based alloys

Y. Guo, K. Georgarakis, Y. Yokoyama, A. R. Yavari

    Research output: Contribution to journalArticle

    36 Citations (Scopus)

    Abstract

    A series of TiNb(Sn) alloys were synthesized by copper mold suction casting and subjected to different heat treatments (furnace cooling or water quenching). The microstructure, thermal and mechanical properties of the as-cast and heat treated samples were investigated. For the Ti-8.34 at.% Nb alloy, the as-cast and water quenched samples possess martensitic α′′ phase at room temperature and compression tests of these samples show occurrence of shape memory effect. For β phase Ti-25.57 at.% Nb alloys, stress-induced martensitic transformation was found during compression in the as-cast and water quenched samples. For the ternary Ti-25.05 at.%Nb-2.04 at.%Sn alloy, conventional linear elastic behavior was observed. It is shown that the addition of Sn increases the stability of the β phase. The Young's moduli of these alloys were also measured by ultrasonic measurements. Water-quenched Ti-25.57 at.%Nb alloy was found to exhibit the lowest Young's modulus value. Sn addition has small impact on the Young's moduli of the TiNb alloys.

    Original languageEnglish
    Pages (from-to)25-30
    Number of pages6
    JournalJournal of Alloys and Compounds
    Volume571
    DOIs
    Publication statusPublished - 2013 Sep 15

    Keywords

    • Mechanical properties
    • Shape memory effect
    • Superelasticity
    • TiNb alloys

    ASJC Scopus subject areas

    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys
    • Materials Chemistry

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