Time-dependent mechanical behavior of phase-separated ZrCuTiTa thin films under nanoindentation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)62_Review of books or of software (or similar publications/items)peer-review

2 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)26-30
Journal / PublicationIntermetallics
Volume27
Online published15 Feb 2012
Publication statusPublished - Aug 2012
Externally publishedYes

Abstract

A series of Ta-modified amorphous ZrCuTi thin films were produced by magnetron sputter deposition techniques. Microstructural examination using transmission electron microscopy indicated that the Ta addition induced phase separation and resulted in two-phase glass structures. The composition and morphology (such as density, size, and volume fraction) of the second-phase structure were characterized. The mechanical properties, including modulus and hardness, were measured using a nanoindentation method and compared with the predictions from theoretical models. Nanoindentation creep experiments were also conducted to evaluate the viscoelastic response of the two-phase glasses. The characteristic relaxation time was found to be a function of the glass transition temperature. Its physical significance was discussed.

Research Area(s)

  • Creep, Glasses, Mechanical properties at ambient temperature, metallic, Multiphase intermetallics, Thin films