A parameter governing the plasticity of Cu-Zr containing bulk metallic glasses

Seok Woo Lee, Chang Myun Lee, Jae Pyoung Ahn, Yu Chan Kim, Jae Chul Lee

    Research output: Contribution to journalArticlepeer-review

    10 Citations (Scopus)

    Abstract

    Experiments were conducted on bulk metallic glasses (BMGs) to identify a crucial factor that governs the degree of the plasticity shown by these alloys. It was found that in situ formation of nanocrystallites, which is known as the deformation-induced nanocrystallization, play a key role in providing initiation sites of the local deformation, indicating that a high degree of plasticity could be achieved from BMGs in which deformation facilitates nanocrystallization. The degree of this deformation-induced nanocrystallization was found to be strongly dependent on the activation energy for crystallization. In this paper, we report that a factor governing the plasticity of BMGs lies in the activation energy for crystallization.

    Original languageEnglish
    Pages (from-to)172-175
    Number of pages4
    JournalMaterials Science and Engineering A
    Volume448-451
    DOIs
    Publication statusPublished - 2007 Mar 25

    Bibliographical note

    Funding Information:
    This research was supported by a grant (05K1501-01210) from ‘Center for Nanostructured Materials Technology’ under ‘21st Century Frontier R&D Programs’ of the Ministry of Science and Technology, and the Basic Research Program (R01-2004-000-10891-0) of Korea Science and Engineering Foundation, Republic of Korea.

    Keywords

    • Bulk metallic glass
    • Deformation-induced crystallization
    • Plasticity

    ASJC Scopus subject areas

    • General Materials Science
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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