The effect of size on the elastic strain limit in Ni60Nb 40 glassy films

Q. K. Jiang, Pan Liu, Q. P. Cao, C. Wang, X. L. Li, X. Y. Gao, X. D. Wang, D. X. Zhang, X. D. Han, Z. Zhang, J. Z. Jiang

    Research output: Contribution to journalArticlepeer-review

    17 Citations (Scopus)

    Abstract

    On small-sized Ni60Nb40 magnetron-sputtered glassy films confined by frame, we experimentally revealed a significant size effect on the elastic strain limits by in situ transmission electron microscopy observations. Ni60Nb40 glassy films with thicknesses of 50, 100 and 200 nm exhibit elastic strain limits of 6.5-6.6%, 4.7-4.9% and 3.5-3.6%, respectively. No effects of changing length or width, or the ratio of width or length to thickness on the elastic strain limit are detected in the studied ranges. The size effect could be attributed to different open volumes in the magnetron-sputtered Ni60Nb40 films with various thicknesses, indicating that controlling the open volumes might be a useful way to tailor the properties of metallic glassy materials. The current findings provide a new way to understand the tensile deformation behavior of metallic glasses and supply an effective approach to enhance the elastic strain limit of metallic glasses.

    Original languageEnglish
    Pages (from-to)4689-4695
    Number of pages7
    JournalActa Materialia
    Volume61
    Issue number12
    DOIs
    Publication statusPublished - 2013 Jul 1

    Keywords

    • Elastic properties
    • Free volume
    • Metallic glasses
    • Size effect
    • Thin films

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Ceramics and Composites
    • Polymers and Plastics
    • Metals and Alloys

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