|
|||||
|
|
Shear band evolution during large plastic deformation of brittle and ductile metallic glasses |
|
| Authors: | JW Cui RT Qu FF Wu BL Shen M Stoica |
| Institution: | 1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences , 72 Wenhua Road, Shenyang 110016, China;2. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences , 72 Wenhua Road, Shenyang 110016, China;3. School of Materials and Chemical Engineering, Liaoning University of Technology , 169 Shiying Street, Jinzhou 121001, China;4. Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , Ningbo 315201, China;5. Institute for Complex Materials , P.O. Box 270016, IFW Dresden, D-01171 Dresden, Germany |
| Abstract: | Four monolithic metallic glasses (MMGs) with different plasticities varying from brittle to ductile behavior under unconstrained loading were subjected to small punch testing. All specimens undergo large plastic deformation with multiple cobweb-like shear bands under these conditions. The process of shear band evolution was carefully controlled and investigated. Plasticity of MMGs is characterized by equivalent plastic strain ε* (product of shear band density and critical shear offset). Thus, this article provides an experimental basis for a better understanding of the shear band evolution during plastic deformation of MMGs. |
| Keywords: | metallic glasses plastic deformation shear bands |