Fragility and mechanical moduli: Do they really correlate?

A. P. Sokolov, V. N. Novikov, A. Kisliuk

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

The correlation between the fragility of glass-forming systems and the ratio of instantaneous bulk to shear moduli, K∞/G∞, of the corresponding glasses is analyzed for bulk metallic and polymeric materials. We emphasize the importance of the free electron contribution to the bulk modulus of metals and a specific intramolecular contribution to fragility in the case of polymers for some long molecules. We argue that these two contributions are the main reasons for the failure of the correlation between fragility and K∞/G∞ observed for these materials.

Original languageEnglish
Pages (from-to)613-621
Number of pages9
JournalPhilosophical Magazine
Volume87
Issue number3-5
DOIs
StatePublished - Jan 2007
Externally publishedYes

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