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American Institute of Physics, Applied Physics Letters, 15(93), p. 151915

DOI: 10.1063/1.2998410

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Physical factors controlling the ductility of bulk metallic glasses

Journal article published in 2008 by Y. Liu, H. Wu, C. T. Liu ORCID, Z. Zhang, Veerle Keppens
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

In order to identify key physical factor controlling the deformation and fracture behavior of bulk metallic glasses (BMGs), we compiled and analyzed the elastic moduli and compressive ductility for BMGs. In addition, new modulus data were generated in the critical ranges in order to facilitate the analysis. We have found that the intrinsic ductility of BMGs can be correlated with the bulk-to-shear modulus ratio B/G according to Pugh’s [Philos. Mag. 45, 823 (1954) ] rule. In some individual BMG systems, for example, Fe based, the relationship seems to be very clear. The physical meaning of this correlation is discussed in terms of atomic bonding and connectivity.