Nanoscopic fluctuation in quenched Zr-Cu-Ni-Al metallic glasses and their welds examined by ASAXS at Zr-K edge

H. Okuda, I. Murase, R. Kurosaki, E. Nakagawa, S. Oshiai, Yoshihiko Yokoyama, J. Saida, K. Inoue

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Anomalous small-angle scattering (ASAXS) measurements at Zr-K absorption edge were carried out to examine precursory structural and/or chemical fluctuation of quenched quaternary ZrCuNiAl bulk metallic glasses and their welds. The measurements were carried out at BL-40B2 of SPring8, Japan. The incident photon energies were about 30 and 100 eV lower than the K-absorption edge. The intensity profiles for the ZrCuNiAl alloys exhibited two characteristic scattering components. One is a monotonically decreasing component at low q, and the other is a shoulder component observed at higher q, suggesting a cluster-like fluctuation with a size of about a nanometer in radius. From the difference of the scattering intensity between the two energies, it is concluded that the scattering contrast between the clusters and the matrix is very low, with less than about one electron/atom, and chemical fluctuations is involved.

Original languageEnglish
Pages (from-to)1038-1042
Number of pages5
JournalIntermetallics
Volume14
Issue number8-9
DOIs
Publication statusPublished - 2006 Aug 1

Keywords

  • B. Glasses, metallic
  • B. Phase transformation
  • Diffraction (X-yay)
  • Welding

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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