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

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)2795-2800
Journal / PublicationMaterials Transactions
Volume50
Issue number12
Online published11 Nov 2009
Publication statusPublished - 2009
Externally publishedYes

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.

Research Area(s)

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

Citation Format(s)

Mechanical behavior of Au-based metallic glass in micro-scale at ambient and elevated temperatures. / Lee, C. J.; Lai, Y. H.; Tang, C. W.; Huang, J. C.; Jang, J. S.C.

In: Materials Transactions, Vol. 50, No. 12, 2009, p. 2795-2800.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review