Journal
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
Volume 24, Issue 6, Pages 2354-2358Publisher
SPRINGER
DOI: 10.1007/s11665-015-1524-z
Keywords
Bulk metallic glass composite; Dendritic evolution; Fracture mechanism; Tensile deformation; Work hardening
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Funding
- Fundamental Research Fund of Northwestern Polytechnical University [JC20120203]
- Specialized Research Fund for the Doctoral Program of Higher Education [2013610212007]
- Program of Introducing Talents of Discipline to Universities [B08040]
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The tensile deformation behavior of Ti50Zr20Nb12Cu5Be13 bulk metallic glass composite at ambient temperature was investigated by uniaxial tensile tests. All stress-strain curves of Ti50Zr20Nb12Cu5Be13 demonstrated work hardening and work softening during deformation. Many shear bands were generated during deformation. In parallel, the dendrite of Ti50Zr20Nb12Cu5Be13 underwent severe plastic deformation. Shear bands turned into microcracks during tensile deformation. By observing the fracture surface, the fractograph showed only a ductile dimple fracture pattern. Therefore, the excellent plasticity of the Ti50Zr20Nb12Cu5Be13 bulk metallic glass composite was due to the formation of plastic dimple fracture and many shear bands during tensile deformation.
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