Nanoindentation creep behavior of Cu–Zr metallic glass films

Yaqiang Wang, Jinyu Zhang, Kai Wu, Gang Liu, Daniel Kiener, Jun Sun

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32 Citations (Scopus)


The size-dependent hardness, strain-rate sensitivity (SRS) and shear transformation zone (STZ) volume of co-sputtered Cu–Zr metallic glass films with film thickness h spanning from 1000 to 3000 nm were systematically investigated by nanoindentation creep tests at room temperature. Experimental results manifested an exceptional decrease in hardness and a monotonic increment in SRS (or a monotonic decline in STZ volume) with reducing h. The deformation mechanism could be rationalized in light of more free volume combined with smaller STZs in thinner films, which likely trigger the strain-softening behavior. Moreover, STZs and deformation-induced devitrification promote the homogeneous-like plastic flow.
Original languageEnglish
Pages (from-to)22-28
Number of pages7
JournalMaterials Research Letters [Elektronische Ressource]
Issue number1
Early online date19 Oct 2017
Publication statusPublished - 2 Jan 2018


  • hardness
  • Metallic glass films
  • nanoindentation
  • strain-rate sensitivity

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