New centimeter-sized quaternary Ti-Zr-Be-Cu bulk metallic glasses with large glass forming ability

S. F. Zhao, N. Chen, P. Gong, K. F. Yao

    Research output: Contribution to journalArticlepeer-review

    14 Citations (Scopus)

    Abstract

    By replacing Be with Cu in ternary Ti-Zr-Be alloys, new centimeter-sized quaternary Ti-based bulk metallic glasses (BMGs) have been successfully synthesized in Ti<inf>41</inf>Zr<inf>25</inf>Be<inf>34-x</inf>Cu<inf>x</inf> (x = 2, 4, 6 and 8 at. %) and Ti<inf>45</inf>Zr<inf>20</inf>Be<inf>35-x</inf>Cu<inf>x</inf> (x = 2, 4, 6, 8 and 10 at. %) alloys. With the Cu addition, the glass-forming ability (GFA), the supercooled liquid range and the yield strength of the ternary Ti-Zr-Be glassy alloys are obviously improved. Among all the developed glassy alloys in the present study, the Ti<inf>41</inf>Zr<inf>25</inf>Be<inf>28</inf>Cu<inf>6</inf> BMG has a critical diameter of 15 mm, which is the largest size in the quaternary Ti-based BMGs. The experimental results show that Cu is an effective element for improving the GFA of the Ti-Zr-Be glassy alloys.

    Original languageEnglish
    Pages (from-to)533-538
    Number of pages6
    JournalJournal of Alloys and Compounds
    Volume647
    DOIs
    Publication statusPublished - 2015 Jul 1

    Keywords

    • Bulk metallic glasses
    • Glass-forming ability
    • Mechanical properties
    • Thermal stability
    • Ti-based alloys

    ASJC Scopus subject areas

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

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