Size-dependent plasticity and fracture of a metallic glass in compression
- ORNL
A specimen size effect related to elastic spring-back and strain softening is reported on the deformation and fracture behavior of bulk metallic glass (BMG). Unlike in large specimens where unstable shear band propagation usually leads to catastrophic fracture, in small specimens yielding is followed by stable shear band propagation and extensive plastic deformation. Additionally, the fracture surfaces of the small specimens are smooth without the characteristic vein patterns seen in large specimens. The present results demonstrate that it is important to take specimen size into account when interpreting plasticity and fracture of BMGs, especially when considering the effects of composition on ductility.
- Research Organization:
- Oak Ridge National Laboratory (ORNL)
- Sponsoring Organization:
- SC USDOE - Office of Science (SC)
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 930979
- Journal Information:
- Intermetallics, Journal Name: Intermetallics Journal Issue: 3 Vol. 16; ISSN 0966-9795; ISSN IERME5
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effect of cooling rates on the structure, density and micro-indentation behavior of the Fe, Co-based bulk metallic glass
Continuum Modeling of Bulk Metallic Glasses and Composites