Role of nanocrystals on the plasticity of amorphous alloy

Chang Myeon Lee, Soo Won Chae, Hwi Jun Kim, Jae Chul Lee

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The role of nanocrystals on the plasticity of the Cu64Zr 36 amorphous alloy was studied in terms of the initiation of shear bands and the propagation of cracks. The plastic deformation behaviors of the fully amorphous and the partially crystallized samples with various degrees of crystallinity were compared. The partially crystallized alloys with an adequate amount of nanocrystals showed a considerable enhancement in their plasticity. Finite element calculations were conducted to qualitatively examine the role of the nanocrystals on the formation of the shear bands, while high-resolution electron microscopy was used to directly observe the crack propagation behavior through the matrix with (or without) nanocrystals.

Original languageEnglish
Pages (from-to)191-196
Number of pages6
JournalMetals and Materials International
Volume13
Issue number3
DOIs
Publication statusPublished - 2007 Jun

Keywords

  • Amorphous alloy
  • Finite element method
  • Nanocrystallite
  • Plasticity
  • Shear bands

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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