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Study of mechanical deformation of Zr55Cu30Al10Ni5bulk metallic glass through instrumented indentation

Authors
Journal
Materials Science and Engineering A
0921-5093
Publisher
Elsevier
Publication Date
Volume
528
Issue
21
Identifiers
DOI: 10.1016/j.msea.2011.05.018
Keywords
  • Finite Element Method
  • Indentation
  • Bulk Amorphous Alloys
  • Metallic Glasses

Abstract

Abstract Instrumented sharp indentation experiments using both conical and Vickers diamond pyramidal indenters were carried out to study deformation characteristics of Zr 55Cu 30Al 10Ni 5 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.

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