Influence of minor aluminum concentration changes in zirconium-based bulk metallic glasses on the elastic, anelastic, and plastic properties

A. Caron, R. Wunderlich, D. V. Louzguine-Luzgin, G. Xie, A. Inoue, H. J. Fecht

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

The Poisson's ratio of Zr-based bulk metallic glasses in the system Zr63-xCu24AlxNi10Co3 was found to exhibit a non-monotonous behavior as a function of x when measured with ultrasound by the pulse-echo technique. In addition, from wave propagation velocity measurements at different frequencies, i.e. f = 2.25 MHz and f = 10 MHz, a composition-dependent anelastic behavior as a function of x is found, exhibiting a similar non-monotonous behavior. In this work we further investigated the plastic deformation and the creep properties of this glass system in compression tests and by nanoindentation. The plastic strain and the measured creep deformation show correlations with the Poisson's ratio. We then discuss the anelastic behavior observed while measuring the sound-wave propagation velocity in the frame of the thermoelastic damping and the bond reorientation as proposed by Egami. Finally we discuss these effects with regard to X-ray diffraction analysis.

Original languageEnglish
Pages (from-to)2004-2013
Number of pages10
JournalActa Materialia
Volume58
Issue number6
DOIs
Publication statusPublished - 2010 Apr

Keywords

  • Bulk metallic glasses
  • Ductility
  • Elasticity
  • Ultrasound

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

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