Journal
APPLIED PHYSICS LETTERS
Volume 98, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3540652
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Funding
- Innovative Metals Processing Centre (IMPC)
- Engineering and Physical Sciences Research Council (EPSRC)
- Engineering and Physical Sciences Research Council [EP/F023464/1, EP/E063497/1] Funding Source: researchfish
- EPSRC [EP/E063497/1, EP/F023464/1] Funding Source: UKRI
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Ratios of elastic constants C-12/C-11 and C-44/C-11 are compared for a representative group of bulk metallic glasses (BMGs) via a Blackman diagram [M. Blackman, Proc. R. Soc. London, Ser. A 164, 62 (1938)]. By the application of bounding limits to the elastic data, with respect to the Born mechanical-instability criterion and the extent of deviation from zero Cauchy pressure, a physical picture emerges of the required structural nature of a BMG if plasticity is to be prevalent, suggesting the need for a large kinetic glass fragility index m as well as nondirectional interatomic bonds. (C) 2011 American Institute of Physics. [doi:10.1063/1.3540652]
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