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Evaluation of the relationship between the effective strain and the springback behavior during the deformation of metallic glass ribbons

TitleEvaluation of the relationship between the effective strain and the springback behavior during the deformation of metallic glass ribbons
Publication TypeJournal Article
Year of Publication2014
AuthorsLee, MH, Park, ES, Ott, RT, Kim, BS, Eckert, J
JournalApplied Physics Letters
Volume105
Pagination061906
Date Published08
Type of ArticleArticle
ISBN Number0003-6951
Accession NumberWOS:000341188700025
Keywordsalloy, plasticity
Abstract

We evaluated the role of effective strain on the plasticity of metallic glasses related to springback phenomena in both ductile Zr-based metallic glass and brittle Hf-based metallic glass. Experimental investigations of the deformation behavior and the intrinsic mechanical properties of metallic glass were performed by room temperature L-bending deformation. The modeling analysis clearly shows that an inhomogeneous effective strain for initiating shear band is generated during deformation, with the brittleness of a metallic glass being dependent on the effective strain reaching the critical fracture strain of the glass. The combined experimental and modeling results reveal broad and general criteria that should allow for deformability of a wide-variety of glass-forming alloys by adjusting the effective strain during deformation. (C) 2014 AIP Publishing LLC.

DOI10.1063/1.4893159
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Structures and Dynamics