Scaling behavior and complexity of plastic deformation for a bulk metallic glass at cryogenic temperatures

Cun Chen, Jingli Ren, Gang Wang, Karin A. Dahmen, Peter K. Liaw

Research output: Contribution to journalArticlepeer-review

Abstract

We explore the scaling behavior and complexity in the shear-branching process during the compressive deformation of a bulk metallic glass Zr64.13Cu15.75Al10Ni10.12 (at. %) at cryogenic temperatures. The fractal dimension of the stress rate signal ranges from 1.22 to 1.72 with decreasing temperature and a larger shear-branching rate occurs at lower temperature. A stochastic model is introduced for the shear-branching process. In particular, at a temperature of 213K, the shear-branching process evolves as a self-similar random process. In addition, the complexity of the stress rate signal conforms to the larger activation energy of the shear transformation zone at lower temperatures.

Original languageEnglish (US)
Article number012113
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume92
Issue number1
DOIs
StatePublished - Jul 8 2015

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

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