Deformation and evolution of shear bands under compressive loading in bulk metallic glasses

J. Y. Lee, K. H. Han, J. M. Park, K. Chattopadhyay, W. T. Kim, Do Hyang Kim

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Shear band formation and failure mechanism in monolithic glasses and glass matrix composite exhibiting a wide range of plasticity were investigated by interrupted compression experiments. The major shear bands in monolithic glasses appear rapidly after a small deformation, and their numbers remain almost same in the later stages of deformation. The path of the crack growth does not coincide strictly with the shear band. The larger plastic strain in glasses exhibiting higher ductility is mainly accommodated in the primary shear band by forming larger shear offset prior to failure. The failure mechanism under compression is not pure shear, but mixed mode with evidence of a tensile component, which leads to the formation of microvoids (microcracks). Bridging of the microvoids leads to final fracture. In the case of glass composite containing particles, the microcracks at the interface arrest the propagation of the existing shear bands and form additional shear bands, improving plasticity.

Original languageEnglish
Pages (from-to)5271-5279
Number of pages9
JournalActa Materialia
Volume54
Issue number19
DOIs
Publication statusPublished - 2006 Nov 1

Fingerprint

Shear bands
Metallic glass
Glass
Microcracks
Plasticity
Composite materials
Ductility
Crack propagation
Plastic deformation
Experiments

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

Cite this

Lee, J. Y. ; Han, K. H. ; Park, J. M. ; Chattopadhyay, K. ; Kim, W. T. ; Kim, Do Hyang. / Deformation and evolution of shear bands under compressive loading in bulk metallic glasses. In: Acta Materialia. 2006 ; Vol. 54, No. 19. pp. 5271-5279.
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Deformation and evolution of shear bands under compressive loading in bulk metallic glasses. / Lee, J. Y.; Han, K. H.; Park, J. M.; Chattopadhyay, K.; Kim, W. T.; Kim, Do Hyang.

In: Acta Materialia, Vol. 54, No. 19, 01.11.2006, p. 5271-5279.

Research output: Contribution to journalArticle

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