Structure and crystallization kinetics of a Cu50Zr45Ti5 glassy alloy

Guoqiang Xie; Dmitri V. Louzguine-Luzgin; Qingsheng Zhang; Wei Zhang; Akihisa Inoue

doi:10.1016/j.jallcom.2008.07.191

Structure and crystallization kinetics of a Cu₅₀Zr₄₅Ti₅ glassy alloy

Guoqiang Xie, Dmitri V. Louzguine-Luzgin, Qingsheng Zhang, Wei Zhang, Akihisa Inoue

Advanced Institute for Materials Research (AIMR)

Tohoku University

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

20 Citations (Scopus)

Abstract

The crystallization kinetics and structure changes in a melt-spun Cu₅₀Zr₄₅Ti₅ glassy alloy on heating were investigated by X-ray diffractometry, transmission electron microscopy, differential scanning calorimetry and differential isothermal calorimetry. The glassy phase in the Cu₅₀Zr₄₅Ti₅ alloy was crystallized forming Cu₁₀Zr₇ and CuZr₂ phases upon thermal annealing. The activation energy for crystallization obtained by the Arrhenius equation was 435 kJ/mol. The crystallization process took place by nucleation and growth mechanism, and an Avrami exponent of about 3.3 may indicate a three-dimensional interface-controlled growth of nuclei with a decreasing nucleation rate.

Original language	English
Pages (from-to)	24-27
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	483
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2008.07.191
Publication status	Published - 2009 Aug 26

Keywords

Avrami exponent
Crystallization kinetics
Differential isothermal calorimetry
Metallic glasses
Transmission electron microscopy

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10.1016/j.jallcom.2008.07.191

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title = "Structure and crystallization kinetics of a Cu50Zr45Ti5 glassy alloy",

abstract = "The crystallization kinetics and structure changes in a melt-spun Cu50Zr45Ti5 glassy alloy on heating were investigated by X-ray diffractometry, transmission electron microscopy, differential scanning calorimetry and differential isothermal calorimetry. The glassy phase in the Cu50Zr45Ti5 alloy was crystallized forming Cu10Zr7 and CuZr2 phases upon thermal annealing. The activation energy for crystallization obtained by the Arrhenius equation was 435 kJ/mol. The crystallization process took place by nucleation and growth mechanism, and an Avrami exponent of about 3.3 may indicate a three-dimensional interface-controlled growth of nuclei with a decreasing nucleation rate.",

keywords = "Avrami exponent, Crystallization kinetics, Differential isothermal calorimetry, Metallic glasses, Transmission electron microscopy",

author = "Guoqiang Xie and Louzguine-Luzgin, {Dmitri V.} and Qingsheng Zhang and Wei Zhang and Akihisa Inoue",

note = "Funding Information: This work was supported by the Research and Development Project on Advanced Metallic Glasses, Inorganic Materials and Joining Technology as well as by Grant-in-Aid “Priority Area on Science and Technology of Microwave-Induced, thermally Non-Equilibrium Reaction Field” No.: 18070001 from Ministry of Education, Culture, Sports, Science and Technology, Japan.",

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AU - Xie, Guoqiang

AU - Louzguine-Luzgin, Dmitri V.

AU - Zhang, Qingsheng

AU - Zhang, Wei

AU - Inoue, Akihisa

N1 - Funding Information: This work was supported by the Research and Development Project on Advanced Metallic Glasses, Inorganic Materials and Joining Technology as well as by Grant-in-Aid “Priority Area on Science and Technology of Microwave-Induced, thermally Non-Equilibrium Reaction Field” No.: 18070001 from Ministry of Education, Culture, Sports, Science and Technology, Japan.

PY - 2009/8/26

Y1 - 2009/8/26

N2 - The crystallization kinetics and structure changes in a melt-spun Cu50Zr45Ti5 glassy alloy on heating were investigated by X-ray diffractometry, transmission electron microscopy, differential scanning calorimetry and differential isothermal calorimetry. The glassy phase in the Cu50Zr45Ti5 alloy was crystallized forming Cu10Zr7 and CuZr2 phases upon thermal annealing. The activation energy for crystallization obtained by the Arrhenius equation was 435 kJ/mol. The crystallization process took place by nucleation and growth mechanism, and an Avrami exponent of about 3.3 may indicate a three-dimensional interface-controlled growth of nuclei with a decreasing nucleation rate.

AB - The crystallization kinetics and structure changes in a melt-spun Cu50Zr45Ti5 glassy alloy on heating were investigated by X-ray diffractometry, transmission electron microscopy, differential scanning calorimetry and differential isothermal calorimetry. The glassy phase in the Cu50Zr45Ti5 alloy was crystallized forming Cu10Zr7 and CuZr2 phases upon thermal annealing. The activation energy for crystallization obtained by the Arrhenius equation was 435 kJ/mol. The crystallization process took place by nucleation and growth mechanism, and an Avrami exponent of about 3.3 may indicate a three-dimensional interface-controlled growth of nuclei with a decreasing nucleation rate.

KW - Avrami exponent

KW - Crystallization kinetics

KW - Differential isothermal calorimetry

KW - Metallic glasses

KW - Transmission electron microscopy

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ER -

Structure and crystallization kinetics of a Cu₅₀Zr₄₅Ti₅ glassy alloy

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Keywords

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