The transition from homogeneous flow to fracture in metallic glasses at high-homologous temperatures

T Prakash G. Thamburaja, N. Nikabdullah

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We derive a deformation map governing the transition from homogeneous flow to fracture response in metallic glasses under the influence of external conditions, i.e. applied deformation rates, test temperatures and sample sizes. This model is developed using simplified kinematics describing the shear-banding process, free-volume kinetics and also a phenomenologically based ductile-fracture criterion. The analytically obtained deformation map accurately reproduces an experimentally determined deformation map for a commercially available metallic glass system.

Original languageEnglish
Pages (from-to)751-754
Number of pages4
JournalScripta Materialia
Volume65
Issue number9
DOIs
Publication statusPublished - Nov 2011
Externally publishedYes

Fingerprint

Metallic glass
metallic glasses
Temperature
Ductile fracture
Free volume
Kinematics
kinematics
shear
Kinetics
kinetics
temperature

Keywords

  • Analytical methods
  • Fracture
  • Metallic glass
  • Shear bands

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

The transition from homogeneous flow to fracture in metallic glasses at high-homologous temperatures. / G. Thamburaja, T Prakash; Nikabdullah, N.

In: Scripta Materialia, Vol. 65, No. 9, 11.2011, p. 751-754.

Research output: Contribution to journalArticle

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