A new composition zone of bulk metallic glass formation in the Cu-Zr-Ti ternary system and its correlation with the eutectic reaction

Chun Li Dai; Hua Guo; Yi Li; Jian Xu

doi:10.1016/j.jnoncrysol.2008.04.013

A new composition zone of bulk metallic glass formation in the Cu-Zr-Ti ternary system and its correlation with the eutectic reaction

Chun Li Dai
, Hua Guo
, Yi Li
, Jian Xu^*

^*Corresponding author for this work

CAS - Institute of Metal Research
National University of Singapore

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

33 Scopus citations

Abstract

A new composition region of bulk metallic glass formation, around Cu₅₂Zr₄₀Ti₈, was discovered in the Cu-Zr-Ti ternary system, for which monolithic bulk metallic glass rods of 4 mm in diameter can be fabricated using copper mold casting. The solidification of the Cu₅₂Zr₄₀Ti₈ deeply-undercooled liquid mainly undergoes a univariant eutectic reaction, (L → Cu₁₀Zr₇ + CuZr), even though this composition was predicted to be a ternary eutectic point (L → Cu₁₀Zr₇ + CuZr + Cu₂ZrTi) by CALPHAD calculations. With respect to the deep-eutectic reaction of (L → Cu₁₀Zr₇ + CuZr) in the Cu-Zr binary alloys, alloying of Ti has a significant effect on further stabilizing the liquid, as indicated as a drop of the univariant eutectic groove, limiting the coupled growth of two crystalline phases, hence increasing the glass-forming ability.

Original language	English
Pages (from-to)	3659-3665
Number of pages	7
Journal	Journal of Non-Crystalline Solids
Volume	354
Issue number	31
DOIs	https://doi.org/10.1016/j.jnoncrysol.2008.04.013
State	Published - 1 Aug 2008
Externally published	Yes

Keywords

Alloys
Calorimetry
Glass transition
Phases and equilibria
Scanning electron microscopy
Transition metals
X-ray diffraction

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10.1016/j.jnoncrysol.2008.04.013

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title = "A new composition zone of bulk metallic glass formation in the Cu-Zr-Ti ternary system and its correlation with the eutectic reaction",

abstract = "A new composition region of bulk metallic glass formation, around Cu52Zr40Ti8, was discovered in the Cu-Zr-Ti ternary system, for which monolithic bulk metallic glass rods of 4 mm in diameter can be fabricated using copper mold casting. The solidification of the Cu52Zr40Ti8 deeply-undercooled liquid mainly undergoes a univariant eutectic reaction, (L → Cu10Zr7 + CuZr), even though this composition was predicted to be a ternary eutectic point (L → Cu10Zr7 + CuZr + Cu2ZrTi) by CALPHAD calculations. With respect to the deep-eutectic reaction of (L → Cu10Zr7 + CuZr) in the Cu-Zr binary alloys, alloying of Ti has a significant effect on further stabilizing the liquid, as indicated as a drop of the univariant eutectic groove, limiting the coupled growth of two crystalline phases, hence increasing the glass-forming ability.",

keywords = "Alloys, Calorimetry, Glass transition, Phases and equilibria, Scanning electron microscopy, Transition metals, X-ray diffraction",

author = "Dai, \{Chun Li\} and Hua Guo and Yi Li and Jian Xu",

year = "2008",

month = aug,

day = "1",

doi = "10.1016/j.jnoncrysol.2008.04.013",

language = "英语",

volume = "354",

pages = "3659--3665",

journal = "Journal of Non-Crystalline Solids",

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T1 - A new composition zone of bulk metallic glass formation in the Cu-Zr-Ti ternary system and its correlation with the eutectic reaction

AU - Dai, Chun Li

AU - Guo, Hua

AU - Li, Yi

AU - Xu, Jian

PY - 2008/8/1

Y1 - 2008/8/1

N2 - A new composition region of bulk metallic glass formation, around Cu52Zr40Ti8, was discovered in the Cu-Zr-Ti ternary system, for which monolithic bulk metallic glass rods of 4 mm in diameter can be fabricated using copper mold casting. The solidification of the Cu52Zr40Ti8 deeply-undercooled liquid mainly undergoes a univariant eutectic reaction, (L → Cu10Zr7 + CuZr), even though this composition was predicted to be a ternary eutectic point (L → Cu10Zr7 + CuZr + Cu2ZrTi) by CALPHAD calculations. With respect to the deep-eutectic reaction of (L → Cu10Zr7 + CuZr) in the Cu-Zr binary alloys, alloying of Ti has a significant effect on further stabilizing the liquid, as indicated as a drop of the univariant eutectic groove, limiting the coupled growth of two crystalline phases, hence increasing the glass-forming ability.

AB - A new composition region of bulk metallic glass formation, around Cu52Zr40Ti8, was discovered in the Cu-Zr-Ti ternary system, for which monolithic bulk metallic glass rods of 4 mm in diameter can be fabricated using copper mold casting. The solidification of the Cu52Zr40Ti8 deeply-undercooled liquid mainly undergoes a univariant eutectic reaction, (L → Cu10Zr7 + CuZr), even though this composition was predicted to be a ternary eutectic point (L → Cu10Zr7 + CuZr + Cu2ZrTi) by CALPHAD calculations. With respect to the deep-eutectic reaction of (L → Cu10Zr7 + CuZr) in the Cu-Zr binary alloys, alloying of Ti has a significant effect on further stabilizing the liquid, as indicated as a drop of the univariant eutectic groove, limiting the coupled growth of two crystalline phases, hence increasing the glass-forming ability.

KW - Alloys

KW - Calorimetry

KW - Glass transition

KW - Phases and equilibria

KW - Scanning electron microscopy

KW - Transition metals

KW - X-ray diffraction

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U2 - 10.1016/j.jnoncrysol.2008.04.013

DO - 10.1016/j.jnoncrysol.2008.04.013

M3 - 文章

AN - SCOPUS:45049088354

SN - 0022-3093

VL - 354

SP - 3659

EP - 3665

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

IS - 31

ER -

A new composition zone of bulk metallic glass formation in the Cu-Zr-Ti ternary system and its correlation with the eutectic reaction

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Keywords

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