Plasticity criterion for bulk amorphous alloys

Seok Woo Lee, Sang Chul Lee, Jae Chul Lee

    Research output: Contribution to journalArticlepeer-review

    Abstract

    A plasticity criterion (p-parameter), which enables the prediction of the plasticity of monolithic bulk amorphous alloys, is proposed. This criterion, which is defined as |λ - 0.18|ΔTx/Tx, takes into account the local packing state and structural stability characterized by the thermal properties of amorphous alloys. Bulk amorphous alloys with large p-values have more loosely packed and mechanically less stable microstructures, so that local structural evolution including nanocrystallization is promoted during the process of loading, leading to enhanced. The proposed criterion can be used as a means for predicting the plasticity of monolithic bulk amorphous alloys, which are devoid of a minor element with positive mixing enthalpy.

    Original languageEnglish
    Pages (from-to)344-349
    Number of pages6
    JournalMaterials Science and Engineering: A
    Volume477
    Issue number1-2
    DOIs
    Publication statusPublished - 2008 Mar 25

    Bibliographical note

    Funding Information:
    This research was supported by grants from the Basic Research Program (R01-2004-000-10891-0) of the Ministry of Science and Technology, Korea.

    Keywords

    • Bulk amorphous alloy
    • Nanocrystallization
    • Plasticity

    ASJC Scopus subject areas

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

    Fingerprint

    Dive into the research topics of 'Plasticity criterion for bulk amorphous alloys'. Together they form a unique fingerprint.

    Cite this