The characterization of creep and time-dependent properties of bulk metallic glasses using nanoindentation

  • W. H. Li*
  • , Keesam Shin
  • , C. G. Lee
  • , B. C. Wei
  • , T. H. Zhang
  • , Y. Z. He
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Viscoelastic deformation and creep behavior of La- and Ce-based bulk metallic glasses (BMGs) with low glass transition temperature are investigated through nanoindentation at room temperature. Creep compliance and retardation spectra are derived to study the creep mechanism. The time-dependent displacement can be well described by a generalized Kelvin model. A modification is proposed to determine the elastic modulus from the generalized Kelvin model. The results are in excellent agreement with the elastic modulus determined by uniaxial compression tests.

Original languageEnglish
Pages (from-to)371-375
Number of pages5
JournalMaterials Science and Engineering: A
Volume478
Issue number1-2
DOIs
StatePublished - 15 Apr 2008
Externally publishedYes

Keywords

  • A generalized Kelvin model
  • Bulk metallic glasses
  • Creep
  • Nanoindentation

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