Acoustic analysis of the amorphous phase of annealed Zr55Cu 30Ni5Al10 glassy alloy, using diffracted SH ultrasonic waves

Mikio Fukuhara, Xinmin Wang, Akihisa Inoue

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

The propagation characteristics of a shear horizontally polarized SH wave, (which proceeds horizontally with respect to free surfaces in isotropic materials) passing through an annealed Zr55Cu30Ni 5Al10 glassy alloy were investigated in terms of the acoustic determination of phases during annealing. The received wave patterns distinguished two phases; a nanocrystalline and an amorphous phase. The amorphous phase was composed of three kinds of structural colonies, 0.24, 0.59 and 0.72 mm in size. The ordering of the amorphous phase is related to increase in wave velocity, damping ratio, phase degree and wavelength, accompanied by frequency conversion. Thus, the acoustic analysis method using diffracted SH ultrasonic waves can act a useful probe for determining the amorphous phase of glassy alloys, and is more precise than the X-ray diffraction method.

Original languageEnglish
Pages (from-to)1707-1710
Number of pages4
JournalJournal of Non-Crystalline Solids
Volume356
Issue number33-34
DOIs
Publication statusPublished - 2010 Jul 15

Keywords

  • Amorphous metals
  • Damping ratio
  • Metallic glasses
  • Nanocrystalline phase
  • Ultrasonic wave velocity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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