Effect of Ti addition on the crystallization behavior and glass-forming ability of Zr-Al-Cu alloys

J. B. Qiang, W. Zhang, G. Q. Xie, A. Inoue

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

The crystallization behavior of melt-spun (Zr65Al7.5Cu27.5)100-xTix (x = 0-15; in at.%) metallic glasses has been investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM) and differential scanning calorimetry (DSC). The DSC traces showed an altered crystallization mode in the vicinity of 3 at.% Ti addition. A metastable icosahedral quasicrystal precipitated at the first crystallization stage of the Ti-bearing metallic glasses, which subsequently transformed to the stable Zr2Cu-type phase in the followed exothermic reaction. The glass-forming abilities (GFAs) of these metallic glasses were assessed by the recognized GFA indicators Trg, ΔTx and γ. BMGs were easily made in the compositions containing 3-7 at.% Ti by means of copper mold casting. The validity of these parameters was clarified using the critical BMG forming diameter evidence.

Original languageEnglish
Pages (from-to)2054-2059
Number of pages6
JournalJournal of Non-Crystalline Solids
Volume354
Issue number18
DOIs
Publication statusPublished - 2008 Apr 15
Externally publishedYes

Keywords

  • Amorphous metals
  • Quasicrystals
  • metallic glasses

ASJC Scopus subject areas

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

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