Abstract
Usually, monolithic bulk metallic glasses undergo inhomogeneous plastic deformation and exhibit poor ductility () at room temperature. We present a new class of bulk metallic glass, which exhibits high strength of up to 2265 MPa together with extensive “work hardening” and large ductility of 18%. Significant increase in the flow stress was observed during deformation. The “work-hardening” capability and ductility of this class of metallic glass is attributed to a unique structure correlated with atomic-scale inhomogeneity, leading to an inherent capability of extensive shear band formation, interactions, and multiplication of shear bands.
- Received 4 February 2005
DOI:https://doi.org/10.1103/PhysRevLett.94.205501
©2005 American Physical Society