Ductile Fe-based amorphous alloy

Hong Kyu Kim, Kwang Bok Lee, Jae Chul Lee

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Experiments demonstrated that the addition of a minute amount of V to Fe52Co(20-x)B20Si4Nb4Vx amorphous alloy induces atomic-scale phase separation, which dramatically enhances the plasticity. Especially, Fe52Co17.5B20Si4Nb4V2.5 amorphous alloy exhibited a strength of 4.7GPa and a fracture strain of 8.0%, which is the largest strain reported for Fe-based amorphous alloys. In this study, the structural origin of the enhanced plasticity is explored by examining the role played by the phase separating element on the packing density and strain localization.

Original languageEnglish
Pages (from-to)399-403
Number of pages5
JournalMaterials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume552
DOIs
Publication statusPublished - 2012 Aug 30

Bibliographical note

Funding Information:
J.C. acknowledges the support of the National Research Foundation of Korea under Award of 2011-0000241.

Keywords

  • Amorphous alloy
  • Phase separation
  • Plasticity
  • Strain localization
  • Structural disordering

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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