Viscosity of amorphous materials during glass-forming: More from the Adam-Gibbs Law

Haihui Ruan, L. C. Zhang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

This study aims to investigate the microscopic origin of viscosity by simplifying an amorphous system to a mixture of many independent atomic subsystems. The response of the macroscopic system is then taken as an ensemble average of the relaxations of such subsystems. The result shows that with the reduction of temperature, the overall viscosity changes from the harmonic mean of the subsystems, which is dominated by the fast relaxations, to the arithmetic mean governed by the slowest relaxation. The successful application of our model to the amorphous Selenium indicates the model captures the fundamental mechanism of the viscosity variation.
Original languageEnglish
Title of host publicationAdvances in Engineering Plasticity XI
Pages223-226
Number of pages4
DOIs
Publication statusPublished - 8 Feb 2013
Externally publishedYes
Event11th Asia-Pacific Conference on Engineering Plasticity and Its Applications, AEPA 2012 - Singapore, Singapore
Duration: 5 Dec 20127 Dec 2012

Publication series

NameKey Engineering Materials
Volume535-536
ISSN (Print)1013-9826

Conference

Conference11th Asia-Pacific Conference on Engineering Plasticity and Its Applications, AEPA 2012
Country/TerritorySingapore
CitySingapore
Period5/12/127/12/12

Keywords

  • Amorphous material
  • Configurational entropy
  • Glass
  • Viscosity

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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