Viscous flow in sliding shear band formed during tensile deformation of hypoeutectic Zr-based metallic glass

Yoshihiko Yokoyama, Hitoo Tokunaga, Alain Reza Yavari, Masahiro Yamada, Tohru Yamasaki, Kazutaka Fujita, Akihisa Inoue

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The Zr70Ni16Cu6Al8 bulk metallic glass (BMG) was tested in tension mode using high-speed imaging in order to monitor the viscous flow inside a sliding shear band. Assuming the shear band thickness to be 15 nm, we estimated the shear viscosity to be ∼3.8 × 103 Pa s. The apparent temperature in the shear band was estimated to reach approximately 852 K on the basis of the relationship between the viscosity and the strain rate in the supercooled liquid region and was found to be considerably lower than the melting temperature (1293 K).

Original languageEnglish
Pages (from-to)1683-1687
Number of pages5
JournalIntermetallics
Volume19
Issue number11
DOIs
Publication statusPublished - 2011 Nov 1

Keywords

  • B. Glasses, metallic
  • C. Melting
  • F. Mechanical testing

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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