Crystallization of Zr 50Cu 40Al 10 metallic glass by rapid heating process

Shuo Zhang; Tetsu Ichitsubo; Eiichiro Matsubara; Yoshihiko Yokoyama; Tokujiro Yamamoto

doi:10.2472/jsms.58.205

Crystallization of Zr ₅₀Cu ₄₀Al ₁₀ metallic glass by rapid heating process

Shuo Zhang, Tetsu Ichitsubo, Eiichiro Matsubara, Yoshihiko Yokoyama, Tokujiro Yamamoto

IMR - Materials Development Division

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

3 Citations (Scopus)

Abstract

The origin of thermal stability and crystallization process of Zr ₅₀Ct ₄₀Al ₁₀ metallic glass have been investigated by means of differential scanning calorimetry (DSC), x-ray diffraction (XRD) and resonant ultrasound spectroscopy (RUS) techniques, by comparing to Zr ₇₀Cu ₂₀Al ₁₀ and Zr ₇₀Cu ₃₀Al ₃₀ glassy alloys. The thermal stability of Zr ₇₀Cu ₂₀Al ₁₀ is significantly higher than those of the others. The x-ray diffraction analysis indicates that constituent atoms in Zr5oCu4oAlio are closely packed in a glassy state. It was found from DSC that Zr ₇₀Cu ₂₀Al ₁₀ glass shows a complicated crystallization process when it is heated at usual heating rates, but when it is rapidly heated, the ordered B2-type ZrCu (equilibrium phase higher than 984K) is formed as a primary phase. This behavior is discussed in terms of the long-range-diffusion of atoms.

Original language	English
Pages (from-to)	205-208
Number of pages	4
Journal	Zairyo/Journal of the Society of Materials Science, Japan
Volume	58
Issue number	3
DOIs	https://doi.org/10.2472/jsms.58.205
Publication status	Published - 2009 Mar

Keywords

Bulk metallic glasses
Crystallization
DSC
FE-SEM
Structure
X-ray diffraction
Zirconium

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10.2472/jsms.58.205

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title = "Crystallization of Zr 50Cu 40Al 10 metallic glass by rapid heating process",

abstract = "The origin of thermal stability and crystallization process of Zr 50Ct 40Al 10 metallic glass have been investigated by means of differential scanning calorimetry (DSC), x-ray diffraction (XRD) and resonant ultrasound spectroscopy (RUS) techniques, by comparing to Zr 70Cu 20Al 10 and Zr 70Cu 30Al 30 glassy alloys. The thermal stability of Zr 70Cu 20Al 10 is significantly higher than those of the others. The x-ray diffraction analysis indicates that constituent atoms in Zr5oCu4oAlio are closely packed in a glassy state. It was found from DSC that Zr 70Cu 20Al 10 glass shows a complicated crystallization process when it is heated at usual heating rates, but when it is rapidly heated, the ordered B2-type ZrCu (equilibrium phase higher than 984K) is formed as a primary phase. This behavior is discussed in terms of the long-range-diffusion of atoms.",

keywords = "Bulk metallic glasses, Crystallization, DSC, FE-SEM, Structure, X-ray diffraction, Zirconium",

author = "Shuo Zhang and Tetsu Ichitsubo and Eiichiro Matsubara and Yoshihiko Yokoyama and Tokujiro Yamamoto",

year = "2009",

month = mar,

doi = "10.2472/jsms.58.205",

language = "English",

volume = "58",

pages = "205--208",

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T1 - Crystallization of Zr 50Cu 40Al 10 metallic glass by rapid heating process

AU - Zhang, Shuo

AU - Ichitsubo, Tetsu

AU - Matsubara, Eiichiro

AU - Yokoyama, Yoshihiko

AU - Yamamoto, Tokujiro

PY - 2009/3

Y1 - 2009/3

N2 - The origin of thermal stability and crystallization process of Zr 50Ct 40Al 10 metallic glass have been investigated by means of differential scanning calorimetry (DSC), x-ray diffraction (XRD) and resonant ultrasound spectroscopy (RUS) techniques, by comparing to Zr 70Cu 20Al 10 and Zr 70Cu 30Al 30 glassy alloys. The thermal stability of Zr 70Cu 20Al 10 is significantly higher than those of the others. The x-ray diffraction analysis indicates that constituent atoms in Zr5oCu4oAlio are closely packed in a glassy state. It was found from DSC that Zr 70Cu 20Al 10 glass shows a complicated crystallization process when it is heated at usual heating rates, but when it is rapidly heated, the ordered B2-type ZrCu (equilibrium phase higher than 984K) is formed as a primary phase. This behavior is discussed in terms of the long-range-diffusion of atoms.

AB - The origin of thermal stability and crystallization process of Zr 50Ct 40Al 10 metallic glass have been investigated by means of differential scanning calorimetry (DSC), x-ray diffraction (XRD) and resonant ultrasound spectroscopy (RUS) techniques, by comparing to Zr 70Cu 20Al 10 and Zr 70Cu 30Al 30 glassy alloys. The thermal stability of Zr 70Cu 20Al 10 is significantly higher than those of the others. The x-ray diffraction analysis indicates that constituent atoms in Zr5oCu4oAlio are closely packed in a glassy state. It was found from DSC that Zr 70Cu 20Al 10 glass shows a complicated crystallization process when it is heated at usual heating rates, but when it is rapidly heated, the ordered B2-type ZrCu (equilibrium phase higher than 984K) is formed as a primary phase. This behavior is discussed in terms of the long-range-diffusion of atoms.

KW - Bulk metallic glasses

KW - Crystallization

KW - DSC

KW - FE-SEM

KW - Structure

KW - X-ray diffraction

KW - Zirconium

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Crystallization of Zr ₅₀Cu ₄₀Al ₁₀ metallic glass by rapid heating process

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Keywords

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