Effects of ion irradiation in metallic glasses

Jesse Carter, E. G. Fu, G. Bassiri, B. M. Dvorak, N. David Theodore, Guoqiang Xie, D. A. Lucca, Michael Martin, Mark Hollander, Xinghang Zhang, Lin Shao

    Research output: Contribution to journalArticlepeer-review

    42 Citations (Scopus)

    Abstract

    Application of metallic glasses as structural materials has been limited by their poor ductility. To overcome brittle failure, nanocrystals are intentionally introduced to stabilize the glasses. In this study, we report on the application of ion irradiation to induce nanocrystalization in a Cu50Zr45Ti5 (CZT) alloy. Transmission electron microcopy, microindentation and nanoindentation have been used to characterize the CZT alloy irradiated with 140 keV He ions at room temperature. Hardness enhancement was observed near the projected range of the He ions, coinciding with the formation of nanocrystals. Such microstructural changes, however, were not observed in the near surface region, where the electronic stopping process is dominant.

    Original languageEnglish
    Pages (from-to)1518-1521
    Number of pages4
    JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
    Volume267
    Issue number8-9
    DOIs
    Publication statusPublished - 2009 May 1

    Keywords

    • High strength alloy
    • Ion irradiation
    • Metallic glass
    • Microindentation
    • Nanoindentation

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Instrumentation

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