Strain burst speeds in metallic glass micropillars

Y. H. Lai, H. M. Chen, C. J. Lee, J. C. Huang, J. S.C. Jang

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Uniaxial microcompression and nanoscratch tests using the nanoindentation system on the Mg-, Au- and Zr-based metallic glass micropillars with diameters of 3.8 and 1 μm were performed and compared. Strain burst phenomena were observed in all microcompression tests as indications of localized shearing. The strain burst speed of micropillars can be measured based on the raw displacement-time profile. The results indicate that strain burst speed of metallic glasses increases with increasing sample size, with decreasing wear resistance, and with decreasing ductility. The current study demonstrates that strain burst speed and wear characteristics can be regarded as promising indicators for the ductility of metallic glasses.

Original languageEnglish
Pages (from-to)1893-1897
Number of pages5
JournalIntermetallics
Volume18
Issue number10
DOIs
StatePublished - Oct 2010

Keywords

  • B. Glasses, metallic
  • B. Mechanical properties at ambient temperature
  • B. Plastic deformation mechanisms
  • F. Mechanical testing

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