1. Cr-based bulk metallic glasses with ultrahigh hardness.
- Author
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Si, J. J., Wang, T., Wu, Y. D., Cai, Y. H., Chen, X. H., Wang, W. Y., Liu, Z. K., and Hui, X. D.
- Subjects
METALLIC glasses ,HARDNESS ,CHROMIUM ,COBALT ,NIOBIUM - Abstract
This letter reports quaternary Cr-Co-Nb-B bulk metallic glasses (BMGs) with ultrahigh hardness and Young's moduli. Especially, Cr
55 Co24 Nb7 B14 BMG exhibits ultrahigh Vickers hardness and Young's modulus of 1605 and 278 GPa, respectively, and the highest specific Young's modulus of 37.0106 Nm/kg among all the developed BMGs so far. It is considered that the high hardness and Young's moduli for this kind of BMGs are intrinsically attributed to the strong interactions between metallic constituent elements and B. [ABSTRACT FROM AUTHOR]- Published
- 2015
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