Influence of loading rate on the mechanical performance of metallic glass

Mária Huráková*, Kornel Csach, Alena Juríková, Jozef Miškuf, Štefan Demčák, Václav Ocelík, Jeff Th M. De Hosson

*Bijbehorende auteur voor dit werk

    OnderzoeksoutputAcademicpeer review

    11 Citaten (Scopus)
    19 Downloads (Pure)

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    Amorphous metallic glass Cu47Ti35Zr11Ni6Si1 was investigated by load-control nanoindentation experiments using the cube corner indenter tip over a wide range of loading rates. The indentation hardness was calculated using different methods either from the loading curves or indent area. Pop-in events were observed on the loading part of the indentation curves mainly at lower rates of loading. Instantaneous plastic deformation decreases with increasing loading rate according to a power law. At high loading rate the instantaneous deformation is suppressed by continuous plastic deformation and no well-developed pop-ins are observed. The morphology of shear bands in the pile-up area of indents showed no correlation with the pop-in event population of the nanoindentation curves and the loading rate.

    Originele taal-2English
    Pagina's (van-tot)160-167
    Aantal pagina's8
    TijdschriftJournal of Non-Crystalline Solids
    Volume470
    DOI's
    StatusPublished - 15-aug-2017

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