|About this Abstract
||Materials Science & Technology 2011
||MS&T'11 Poster Session
||129 Study of Mechanical Deformation of Zr55Cu30Al10Ni5 Bulk Metallic Glass through Instrumented Indentation
||Mohammad Marvi-Mashhadi, Abolfazl Rezaee-Bazzaz, Mohsen Haddad-sabzevar
|On-Site Speaker (Planned)
Instrumented sharp indentation experiments using both Vickers diamond pyramid and conical indenters were carried out to study deformation characteristics of Zr55Cu30Al10Ni5 bulk metallic glass. Finite element simulations of instrumented indentation were also carried out to formulate an overall constitutive response. Comparing the experimentally observed indentation results with the finite element predictions, it can be said that mechanical deformation of the bulk metallic glass can be described well by both Mohr-Coulomb and Drucker-Prager constitutive criteria. Using these criteria, location of circular patterns of shear bonds observed around indenter, their size and shape can also be well predicted. Both Mohr-Coulomb and Drucker-Prager constitutive criteria are also able to estimate the extent of material pile-up observed around indenter, very well.