Effects of Ni addition on the glass-forming ability, mechanical properties and corrosion resistance of Zr-Cu-Al bulk metallic glasses

Y. H. Li, W. Zhang, C. Dong, J. B. Qiang, M. Fukuhara, A. Makino, A. Inoue

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

The thermal stability, glass-forming ability (GFA), mechanical properties and corrosion resistance of Zr60Cu25-xAl15Nix (x=0-25at.%) bulk metallic glasses (BMGs) were systematically investigated. The additional Ni greatly enhances the thermal stability and GFA of BMGs. For alloy with x=15, a fully glassy rod with a critical diameter up to 18mm can be obtained by copper mold casting. In addition, the strength and plasticity of BMGs are effectively improved by adding Ni, and they show remarkable correlations with glass transition temperature and Poisson's ratio or G/B value, respectively. A Zr60Cu5Al15Ni20 BMG exhibits largest compressive plastic strain of 5.5%, yielding strength of 1755MPa and Young's modulus of 83GPa at ambient temperature. Moreover, the electrochemical potentiodynamic polarization curves demonstrate that replacement of Cu by Ni improves the corrosion resistance in chloride-ion-containing solutions significantly.

Original languageEnglish
Pages (from-to)8551-8556
Number of pages6
JournalMaterials Science and Engineering A
Volume528
Issue number29-30
DOIs
Publication statusPublished - 2011 Nov 15

Keywords

  • Bulk metallic glasses
  • Corrosion resistance
  • Glass-forming ability
  • Mechanical properties
  • Zr-based alloys

ASJC Scopus subject areas

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

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