Low temperature elastic properties of CuZrTi bulk metallic glass

R. Tarumi, M. Hirao, T. Ichitsubo, E. Matsubara, J. Saida, H. Kato

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Temperature dependent elastic constants Cij(T) of Cu 60Zr30Ti10 bulk metallic glass (BMG) have been studied using MHz frequency range electromagnetic acoustic resonance (EMAR) from 4.5 to 300 K. At ambient temperature, the BMG shows low shear/bulk modulus ratio (or equivalently high Poisson ratio) compared with that of corresponding crystalline state dues to the dense random packed glassy structure. Analysis of Cij(T) based on the Einstein type lattice vibration model revealed the notable softening in transverse mode acoustic phonons. This unusual vibrational property suggests the existence of liquid like weakly bonded region in the BMG.

Original languageEnglish
Pages (from-to)1842-1845
Number of pages4
JournalMaterials Transactions
Volume48
Issue number7
DOIs
Publication statusPublished - 2007 Jul
Externally publishedYes

Keywords

  • Acoustic phonon
  • CuZrTi bulk metallic glass
  • Elastic constants
  • Ultrasound spectroscopy

ASJC Scopus subject areas

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

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