Improvement of plasticity by tailoring combination of constituent elements in Ti-rich Ti-Zr-Be-Cu-Ni bulk metallic glasses

E. S. Park, H. J. Chang, J. Y. Lee, D. H. Kim

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The effect of replacement of Ti with Y or Nb in Ti-rich Ti-Zr-Be-Cu-Ni bulk metallic glasses (BMGs) has been investigated. The minor addition (MA) of Y (Y-Ti: +58 kJ/mol) induced phase separation into Y-rich crystalline particles and Ti-rich amorphous matrix, while the MA of Nb (Nb-Ti: +10 kJ/mol) led to nanocrystallization in Ti-rich BMGs with icosahedral nuclei. This result indicates that MA of elements having positive enthalpy of mixing can induce a different degree of instability in the single amorphous matrix depending on the amount of repulsive interaction energy. In particular, MA of Nb (up to 4 at.%) significantly increased the compressive fracture strain (εf) Up to ∼9.35 ± 0.2%, which indicates that the plasticity of BMGs can be enhanced by the size-modulated icosahedral phase embedded in the amorphous matrix.

Original languageEnglish
Pages (from-to)3440-3447
Number of pages8
JournalJournal of Materials Research
Volume22
Issue number12
DOIs
Publication statusPublished - 2007 Dec 1

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Improvement of plasticity by tailoring combination of constituent elements in Ti-rich Ti-Zr-Be-Cu-Ni bulk metallic glasses'. Together they form a unique fingerprint.

  • Cite this