Indentation creep study on a Zr-based bulk metallic glass containing nano-quasicrystals

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Abstract

The effect of crystallization on the creep behavior of a Zr-based bulk metallic glass (BMG) with the composition of Zr44Ti11Cu10Ni10Be25 (at.%) was studied by indentation technique. The crystallization process was studied by isothermal annealing in a differential scanning calorimeter at three different temperatures above the glass transition temperature (677, 682 and 687 K). Two exothermic peaks are detected, the first one corresponds to the formation of a quasicrystalline phase. Indentation creep tests were carried out isothermally at the same three temperatures for studying the correlation between the amount of quasicrystalline phase and the creep behavior. A simple relationship between the viscosity and the crystalline phase fraction was found and the activation energy was found to decrease with the progress of crystallization.

Original languageEnglish
Pages (from-to)607-610
Number of pages4
JournalMaterials Science and Engineering A
Volume483-484
Issue number1-2 C
DOIs
Publication statusPublished - Jun 15 2008

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Keywords

  • Bulk metallic glass
  • Indentation creep
  • Quasicrystal
  • Viscosity

ASJC Scopus subject areas

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

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