Thermal stability and nanocrystallizatiqn of Zr-Ti-Ni-Cu-Be bulk metallic glass

G. Wang; J. Shen; J. F. Sun; B. D. Zhou; D. J. Llewellyn; J. D.Fitz Gerald; Z. H. Stachurski

Thermal stability and nanocrystallizatiqn of Zr-Ti-Ni-Cu-Be bulk metallic glass

G. Wang^*
, J. Shen
, J. F. Sun
, B. D. Zhou
, D. J. Llewellyn
, J. D.Fitz Gerald
, Z. H. Stachurski

^*Corresponding author for this work

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

1 Scopus citations

Abstract

The evolution of the microstructure of a Zr_41.25Ti _13.75Ni₁₀Cu_12.5Be_22.5 (at.%) bulk metallic glass during isothermal annealing in the supercooled liquid region is studied by differential scanning calorimetry (DSC), X-ray diffraction (XRD) and transmission electron microscopy (TEM). At the annealing temperature of 383°C, the DSC trace of BMG exhibits three exothermic peaks indicating three crystallization stages. The crystallization activation energies on various crystallization stages are evaluated to be 148±10, 285±10 and 199±10 kJ/mol, respectively. The first stage crystallization of nanocrystals, recognised in DSC and TEM, probably involves icosahedral phase. In the second stage, the TEM and XRD data show the formation of Zr₂Cu and ZrBe₂ phases. The third stage is not yet fully characterized.

Original language	English
Pages (from-to)	546-550
Number of pages	5
Journal	Materials Forum
Volume	29
State	Published - 2005
Externally published	Yes

Cite this

@article{19092bd5e77141debd904aebeecd6a03,

title = "Thermal stability and nanocrystallizatiqn of Zr-Ti-Ni-Cu-Be bulk metallic glass",

abstract = "The evolution of the microstructure of a Zr41.25Ti 13.75Ni10Cu12.5Be22.5 (at.\%) bulk metallic glass during isothermal annealing in the supercooled liquid region is studied by differential scanning calorimetry (DSC), X-ray diffraction (XRD) and transmission electron microscopy (TEM). At the annealing temperature of 383°C, the DSC trace of BMG exhibits three exothermic peaks indicating three crystallization stages. The crystallization activation energies on various crystallization stages are evaluated to be 148±10, 285±10 and 199±10 kJ/mol, respectively. The first stage crystallization of nanocrystals, recognised in DSC and TEM, probably involves icosahedral phase. In the second stage, the TEM and XRD data show the formation of Zr2Cu and ZrBe2 phases. The third stage is not yet fully characterized.",

author = "G. Wang and J. Shen and Sun, \{J. F.\} and Zhou, \{B. D.\} and Llewellyn, \{D. J.\} and Gerald, \{J. D.Fitz\} and Stachurski, \{Z. H.\}",

year = "2005",

language = "英语",

volume = "29",

pages = "546--550",

journal = "Materials Forum",

issn = "0883-2900",

publisher = "Institute of Metals and Materials Australasia",

}

TY - JOUR

T1 - Thermal stability and nanocrystallizatiqn of Zr-Ti-Ni-Cu-Be bulk metallic glass

AU - Wang, G.

AU - Shen, J.

AU - Sun, J. F.

AU - Zhou, B. D.

AU - Llewellyn, D. J.

AU - Gerald, J. D.Fitz

AU - Stachurski, Z. H.

PY - 2005

Y1 - 2005

N2 - The evolution of the microstructure of a Zr41.25Ti 13.75Ni10Cu12.5Be22.5 (at.%) bulk metallic glass during isothermal annealing in the supercooled liquid region is studied by differential scanning calorimetry (DSC), X-ray diffraction (XRD) and transmission electron microscopy (TEM). At the annealing temperature of 383°C, the DSC trace of BMG exhibits three exothermic peaks indicating three crystallization stages. The crystallization activation energies on various crystallization stages are evaluated to be 148±10, 285±10 and 199±10 kJ/mol, respectively. The first stage crystallization of nanocrystals, recognised in DSC and TEM, probably involves icosahedral phase. In the second stage, the TEM and XRD data show the formation of Zr2Cu and ZrBe2 phases. The third stage is not yet fully characterized.

AB - The evolution of the microstructure of a Zr41.25Ti 13.75Ni10Cu12.5Be22.5 (at.%) bulk metallic glass during isothermal annealing in the supercooled liquid region is studied by differential scanning calorimetry (DSC), X-ray diffraction (XRD) and transmission electron microscopy (TEM). At the annealing temperature of 383°C, the DSC trace of BMG exhibits three exothermic peaks indicating three crystallization stages. The crystallization activation energies on various crystallization stages are evaluated to be 148±10, 285±10 and 199±10 kJ/mol, respectively. The first stage crystallization of nanocrystals, recognised in DSC and TEM, probably involves icosahedral phase. In the second stage, the TEM and XRD data show the formation of Zr2Cu and ZrBe2 phases. The third stage is not yet fully characterized.

UR - https://www.scopus.com/pages/publications/24044464886

M3 - 文章

AN - SCOPUS:24044464886

SN - 0883-2900

VL - 29

SP - 546

EP - 550

JO - Materials Forum

JF - Materials Forum

ER -

Thermal stability and nanocrystallizatiqn of Zr-Ti-Ni-Cu-Be bulk metallic glass

Abstract

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