Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 528, Issue 21, Pages 6630-6635Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2011.05.018
Keywords
Finite element method; Indentation; Bulk amorphous alloys; Metallic glasses
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Instrumented sharp indentation experiments using both conical and Vickers diamond pyramidal indenters were carried out to study deformation characteristics of Zr55Cu30Al10Ni5 bulk metallic glass. Finite element simulations of instrumented indentation were also performed to formulate an overall constitutive response. Comparing the experimentally obtained results with the finite element predictions, it can be stated that mechanical deformation of the bulk metallic glass can be described well by both Mohr-Coulomb and Drucker-Prager constitutive criteria. Using these criteria, the extent of material pile-up observed around the indenter was also estimated very well. (C) 2011 Elsevier B.V. All rights reserved.
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