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Title: Indentation-induced deformation localisation in Zr–Cu-based metallic glass
Authors: Nekouie, Vahid
Abeygunawardane-Arachchige, Gayan A.
Kuhn, U.
Roy, Anish
Silberschmidt, Vadim V.
Keywords: Metallic glass
Shear-band localisation
Finite-element analysis
Issue Date: 2013
Publisher: © Elsevier
Citation: NEKOUIE, V. ... et al, 2013. Indentation-induced deformation localisation in Zr–Cu-based metallic glass. Journal of Alloys and Compounds, pp.
Abstract: It has been well documented that the plastic deformation of bulk metallic glasses is localised in thin shear bands. In order to comprehensively understand deformation mechanisms of BMGs, it is necessary to investigate formation of shear bands and related deformation. Nano-indentation studies with a spherical indenter were carried out to characterise shear-band localisation on a surface of Zr-Cu-based metallic glass. The load-displacement diagram of an indentation cycle reflects an elastic deformation followed by the first pop-in at around 4 mN. In addition, an alternative technique is proposed to characterise a plasticity mechanism through the evolution of localised shear bands beneath the indentation – wedge indentation. It is found that a hemicylindrical region of shear bands is formed beneath the indentation zone in this case.
Description: This is the author’s version of a work that was accepted for publication in the Journal of Alloys and Compounds. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published at: http://dx.doi.org/10.1016/j.jallcom.2013.12.002
Version: Accepted for publication
DOI: 10.1016/j.jallcom.2013.12.002
URI: https://dspace.lboro.ac.uk/2134/14038
Publisher Link: http://dx.doi.org/10.1016/j.jallcom.2013.12.002
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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