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

doi:10.1557/jmr.2007.0424

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

19 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 (ε_f) 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 language	English
Pages (from-to)	3440-3447
Number of pages	8
Journal	Journal of Materials Research
Volume	22
Issue number	12
DOIs	https://doi.org/10.1557/jmr.2007.0424
Publication status	Published - 2007 Dec

All Science Journal Classification (ASJC) codes

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

Access to Document

10.1557/jmr.2007.0424

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, {D. H.}",

year = "2007",

month = dec,

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",

}

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, D. H.

PY - 2007/12

Y1 - 2007/12

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

AN - SCOPUS:37549025736

SN - 0884-2914

VL - 22

SP - 3440

EP - 3447

JO - Journal of Materials Research

JF - Journal of Materials Research

IS - 12

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this