Effect of Si addition on glass-forming ability and mechanical properties of Cu-Zr-Al bulk metallic glass

M. Malekan, S. G. Shabestari, W. Zhang, S. H. Seyedein, R. Gholamipour, A. Makino, A. Inoue

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

The effect of Si addition on the glass-forming ability (GFA) and mechanical properties of (Cu50Zr43Al7)100-xSix (x=0, 0.5, 1, 1.5 and 2at.%) alloys were investigated. The GFA of Cu50Zr43Al7 alloy is improved by addition of a small amount of Si, and the critical diameter for glass formation increases from 10mm for the alloy with x=0-12mm for the alloy with x=1 when prepared using copper mold casting. Different criteria are used to evaluate the influence of Si content on the GFA, and the possible mechanisms involved in the achievement of this GFA are also discussed. In the uniaxial compression, the bulk glassy alloys exhibit a limited plastic strain of less than 1%, but the compressive fracture strength and Young's modulus were obtained in high values of 1969-2129MPa and 101-144GPa, respectively. Fracture surface and shear bands of samples were studied by using scanning electron microscopy (SEM).

Original languageEnglish
Pages (from-to)7192-7196
Number of pages5
JournalMaterials Science and Engineering A
Volume527
Issue number27-28
DOIs
Publication statusPublished - 2010 Oct

Keywords

  • Bulk metallic glasses
  • Copper-based alloy
  • Glass-forming ability
  • Mechanical properties

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Effect of Si addition on glass-forming ability and mechanical properties of Cu-Zr-Al bulk metallic glass'. Together they form a unique fingerprint.

Cite this