Enhanced mechanical properties of multilayered micropillars of amorphous ZrCuTi and nanocrystalline Ta layers

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)1047-1051
Journal / PublicationIntermetallics
Volume19
Issue number7
Online published6 Apr 2011
Publication statusPublished - Jul 2011
Externally publishedYes

Abstract

This paper presents the room-temperature mechanical response of as-sputtered amorphous ZrCuTi/crystalline Ta pillars evaluated by micro-compression test. Compared with monolithic ZrCuTi amorphous micro-pillar, the composited pillars exhibits considerably enhanced yield stress as well as improved deforming ability. Instead of the prediction based on iso-stress rule of mixture, the stress of such multilayered micropillars can be well predicted by another model. The positive mechanical properties are attributed to the positive effects from the high-stiffness Ta layers, which do not involve in formation of shear bands but can retard shear bands propagation via forming "plastic zone" in the constrained amorphous ZrCuTi layers.

Research Area(s)

  • A. Multiphase intermetallics, B. Glasses, metallic, C. Thin films, D. Phase interfaces, E. Mechanical properties, theory