Plasticity enhancement of an amorphous alloy driven by atomistic-scale phase separation

Sang Chul Lee, Kyou Hyun Kim, Hwi Jun Kim, Jae Chul Lee

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A bulk amorphous alloy, Zr54Cu36 Al4Be6, was synthesized. This alloy shows a yield strength of ∼1.8 GPa and a large plastic strain of ∼20.5%, which have hardly been observed in monolithic bulk amorphous alloys. Microstructures of this alloy were observed to investigate the origin of the extraordinary plasticity of the alloy. The alloy exhibited a unique microstructure characterized by atomistic-scale phase separation, which probably stems from the large difference in mixing enthalpy between the binary pairs of Zr-Be and Cu-Be. This paper discusses the effect of atomistic-scale phase separation on the enhanced plasticity of amorphous alloys.

Original languageEnglish
Pages (from-to)143-147
Number of pages5
JournalJournal of Korean Institute of Metals and Materials
Volume45
Issue number3
Publication statusPublished - 2007 Mar

Keywords

  • Bulk amorphous alloy
  • Phase separation
  • Plasticity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Modelling and Simulation
  • Surfaces, Coatings and Films
  • Metals and Alloys

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