Tensile plastic deformation behavior of Zr 70Ni 16Cu 6Al 8 bulk metallic glass at cryogenic temperature

Hitoo Tokunaga, Kazutaka Fujita, Yoshihiko Yokoyama

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

A hypoeutectic ZrNiCuAl bulk metallic glass (BMG) shows a clear tensile plastic deformation under a high strain rate condition at room temperature. In this study, the effect of cryogenic temperature and strain rate on the tensile plastic deformation behavior of the hypoeutectic ZrNiCuAl BMG was investigated. Tensile tests were performed for the hypoeutectic ZrNiCuAl BMG specimen with gauge part dimensions of 2.3mm in length and 0.8mm in diameter at cryogenic temperature (133 K) under different strain rate conditions (10 -4 and 10 -1 s -1). As the results, the tensile plastic deformation occurs under both strain rate conditions. Especially, in low strain rate condition (10 -4 s -1), the amount of plastic deformation is clearly larger than that under the high strain rate condition (10 -1 s -1). Furthermore, it was found that there is no positive correlation between the amount of tensile plastic deformation and the number of shear band. In addition, it was inferred that the tensile plastic deformation of the hypoeutectic ZrNiCuAl BMG at cryogenic temperature was induced by specimen sliding along only one major shear band.

Original languageEnglish
Pages (from-to)1395-1399
Number of pages5
JournalMaterials Transactions
Volume53
Issue number8
DOIs
Publication statusPublished - 2012

Keywords

  • Bulk metallic glass
  • Cryogenic temperature
  • Strain rate dependence
  • Supercooled liquid
  • Tensile plastic deformation

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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