Fe-based amorphous alloy with high strength and toughness synthesized based on nm-scale phase separation

Kwang Bok Lee, Kyoung Won Park, Sang Ho Yi, Jae Chul Lee

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Experiments have demonstrated that the addition of a moderate amount of V to Fe52CO(20-x)B20Si4Nb 4Vx amorphous alloy enhances the plasticity of the alloy. In particular, Fe52CO17.6B20Si 4Nb4V2.5 alloy withstood a maximum of 8.3% strain prior to fracture along with a strength exceeding 4.7 GPa. Energy dispersive x-ray spectroscopy conducted on the Fe52CO 17.5B20Si4Nb4V2.5 alloy exhibited evidence of compositional modulation, indicating that nm-scale phase separation had occurred at local regions. In this study, the role played by nm-scale phase separation on the plasticity was investigated in terms of structural disordering and shear localization in order to better understand the structural origin of the enhanced plasticity shown by the developed alloy.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalJournal of Korean Institute of Metals and Materials
Volume48
Issue number1
DOIs
Publication statusPublished - 2010 Jan

Keywords

  • Amorphous alloy
  • Phase-separation
  • Plasticity
  • Shear localization
  • Structural disordering

ASJC Scopus subject areas

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

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