STRESS-INDUCED REORDERING IN AMORPHOUS METALS ANALYZED BY RELAXATION-TIME AND ACTIVATION-ENERGY SPECRUM MODEL

Vaclav Ocelik, K CSACH, A KASARDOVA, J MISKUF, VZ BENGUS, P DUHAJ

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    Abstract

    The isothermal anelastic deformation below the glass transition temperature T-g was investigated on Fe40Ni40B20 and Ni77.5Si7.5B15 amorphous ribbons. Experiments were carried out at temperatures 320 and 340 degrees C after application of mechanical stress steps between 5 - 210 MPa. The obtained anelastic deformation data have been analyzed using two different methods to calculate the relaxation time and activation energy spectrum. Both of these methods reveal that the anelastic relaxation processes in the amorphous structure strongly depend on chemical composition, cooling rate and structural relaxation state of the amorphous structure. The obtained spectra involve three or four quite well separated peaks, each of them represents a different mode of a local atomic rearrangement during the anelastic deformation.

    Original languageEnglish
    Title of host publicationPLASTICITY OF METALS AND ALLOYS - ISPMA 6
    EditorsP Lukac
    Place of PublicationCLAUSTHAL ZELLERFE
    PublisherTRANS TECH PUBLICATIONS LTD
    Pages97-102
    Number of pages6
    ISBN (Print)0-87849-687-4
    Publication statusPublished - 1994
    Event6th International Symposium on Plasticity of Metals and Alloys (ISPMA 6) - PRAGUE, Czech Republic
    Duration: 5-Sept-19949-Sept-1994

    Publication series

    NameKEY ENGINEERING MATERIALS
    PublisherTRANS TECH PUBLICATIONS
    Volume97-9
    ISSN (Print)0252-1059

    Conference

    Conference6th International Symposium on Plasticity of Metals and Alloys (ISPMA 6)
    Country/TerritoryCzech Republic
    Period05/09/199409/09/1994

    Keywords

    • AMORPHOUS ALLOYS RIBBONS
    • ANELASTIC DEFORMATION
    • RELAXATION TIME
    • ACTIVATION ENERGY
    • STRUCTURAL RELAXATION
    • SPECTRA
    • GLASSES
    • SOLIDS

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