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, Do Hyang 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

Fingerprint

Metallic glass
metallic glasses
plastic properties
Plasticity
Nanocrystallization
matrices
Phase separation
Enthalpy
Crystalline materials
enthalpy
nuclei
interactions
energy

All Science Journal Classification (ASJC) codes

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

Cite this

@article{9ec19492d03d4b34876f9051ba5e6e41,
title = "Improvement of plasticity by tailoring combination of constituent elements in Ti-rich Ti-Zr-Be-Cu-Ni bulk metallic glasses",
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.",
author = "Park, {E. S.} and Chang, {H. J.} and Lee, {J. Y.} and Kim, {Do Hyang}",
year = "2007",
month = "12",
day = "1",
doi = "10.1557/jmr.2007.0424",
language = "English",
volume = "22",
pages = "3440--3447",
journal = "Journal of Materials Research",
issn = "0884-2914",
publisher = "Materials Research Society",
number = "12",

}

Improvement of plasticity by tailoring combination of constituent elements in Ti-rich Ti-Zr-Be-Cu-Ni bulk metallic glasses. / Park, E. S.; Chang, H. J.; Lee, J. Y.; Kim, Do Hyang.

In: Journal of Materials Research, Vol. 22, No. 12, 01.12.2007, p. 3440-3447.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Improvement of plasticity by tailoring combination of constituent elements in Ti-rich Ti-Zr-Be-Cu-Ni bulk metallic glasses

AU - Park, E. S.

AU - Chang, H. J.

AU - Lee, J. Y.

AU - Kim, Do Hyang

PY - 2007/12/1

Y1 - 2007/12/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=37549025736&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=37549025736&partnerID=8YFLogxK

U2 - 10.1557/jmr.2007.0424

DO - 10.1557/jmr.2007.0424

M3 - Article

VL - 22

SP - 3440

EP - 3447

JO - Journal of Materials Research

JF - Journal of Materials Research

SN - 0884-2914

IS - 12

ER -