Dynamic viscoelasticity of Zr-Al-Ni-Cu metallic glass in the glass transition region

Y. Ueno, M. Hojo, H. Numakura, T. Ichitsubo, J. Saida

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Viscoelastic behaviour of a metallic glass Zr55Al10Ni5Cu30 has been studied by measuring the dynamic shear modulus G under forced vibration at low frequencies below 1 Hz. In measurements with increasing temperature, the shear modulus falls markedly at temperatures around the glass transition but at different rates under different vibration frequencies. The dynamic viscosity η has been evaluated using the relation η = G/(iω), where ω is the angular frequency. The curves of |η| vs temperature of different frequencies converge to a single curve in the glass transition region, and the converged curve is in fair agreement with the data reported in the literature. The dynamic glass transition point, defined as the vibration frequency and temperature at which the curves of the storage modulus G1 and the loss modulus G2 cross each other, obeys the Arrhenius law. The pre-exponential factor and the activation energy of the transition frequency are unusually large, suggesting that collective movements of atoms control the transition.

Original languageEnglish
Pages (from-to)232-235
Number of pages4
JournalMaterials Science and Engineering A
Volume521-522
DOIs
Publication statusPublished - 2009 Sep 15

Keywords

  • Amorphous solids
  • Glass transition
  • Metallic glasses
  • Rheology
  • Viscoelasticity
  • Viscosity

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Dynamic viscoelasticity of Zr-Al-Ni-Cu metallic glass in the glass transition region'. Together they form a unique fingerprint.

Cite this