Mechanical behavior of Au-based metallic glass in micro-scale at ambient and elevated temperatures

C. J. Lee, Y. H. Lai, C. W. Tang, J. C. Huang, J. S.C. Jang

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The Au based amorphous micro-pillars are fabricated by using focus ion beam (FIB) and tested in micro-compression at ambient and elevated temperatures from 300 to 408 K. The room temperature strength of current micro-pillars could reach to 1600-2000 MPa, much higher than the measured strengths for the 3 mm bulk compression specimen. The stress increment can be rationalized by the Weibull statistics. The current Au based micro-pillars maintain inhomogeneous deformation with one (at most two) principal shear band from 300 up to 393 K. At or above Tg (403 and 408 K), the micro-pillars are deformed in a homogeneous manner without the trace of any shear band. For micro-forming, it should be born in mind that there would be apparent stress increment while forming micro-or nano-scaled patterns and pieces.

Original languageEnglish
Pages (from-to)2795-2800
Number of pages6
JournalMaterials Transactions
Volume50
Issue number12
DOIs
StatePublished - Dec 2009

Keywords

  • Gold alloys
  • Mechanical properties
  • Metallic glasses
  • Micro compression
  • Micro-pillars

Fingerprint

Dive into the research topics of 'Mechanical behavior of Au-based metallic glass in micro-scale at ambient and elevated temperatures'. Together they form a unique fingerprint.

Cite this