Cryogenic temperature plasticity of a bulk amorphous alloy

Kyeu Sang Yoon, Mirim Lee, Eric Fleury, Jae-chul Lee

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Unlike crystalline alloys, bulk amorphous alloys exhibit a significantly enhanced plastic strain when tested at cryogenic temperatures. It was observed that both the retarded band propagation and the multiple shear banding are the characteristic features of the shear banding behaviors that are responsible for the enhanced plasticity at cryogenic temperatures. This study explores the retarded band propagation behavior at cryogenic temperatures in terms of the increased viscosity of a material inside a propagating band. The formation of multiple shear bands at cryogenic temperatures is also clarified by evaluating the role played by the cryogenic environment in facilitating the creation of disorder, where local deformation nucleates.

Original languageEnglish
Pages (from-to)5295-5304
Number of pages10
JournalActa Materialia
Volume58
Issue number16
DOIs
Publication statusPublished - 2010 Sep 1

Fingerprint

Amorphous alloys
Cryogenics
Plasticity
Temperature
Shear bands
Plastic deformation
Viscosity
Crystalline materials

Keywords

  • Amorphous alloy
  • Band velocity
  • Cryogenic temperature plasticity
  • Serrations
  • Viscosity

ASJC Scopus subject areas

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

Cite this

Cryogenic temperature plasticity of a bulk amorphous alloy. / Yoon, Kyeu Sang; Lee, Mirim; Fleury, Eric; Lee, Jae-chul.

In: Acta Materialia, Vol. 58, No. 16, 01.09.2010, p. 5295-5304.

Research output: Contribution to journalArticle

Yoon, Kyeu Sang ; Lee, Mirim ; Fleury, Eric ; Lee, Jae-chul. / Cryogenic temperature plasticity of a bulk amorphous alloy. In: Acta Materialia. 2010 ; Vol. 58, No. 16. pp. 5295-5304.
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