Crystallization kinetics and thermal stability of the Zr60Al7.5Cu17.5Ni10Si4 B1 amorphous alloy studied by isothermal differential scanning calorimetry and transmission electron microscopy

J. S.C. Jang; I. H. Wang; L. J. Chang; G. J. Chen; T. H. Hung; J. C. Huang

doi:10.1016/j.msea.2006.02.395

Crystallization kinetics and thermal stability of the Zr₆₀Al_7.5Cu_17.5Ni₁₀Si₄B₁ amorphous alloy studied by isothermal differential scanning calorimetry and transmission electron microscopy

J. S.C. Jang, I. H. Wang, L. J. Chang, G. J. Chen, T. H. Hung, J. C. Huang

Graduate Institute of Materials Science and Engineering

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

9 Scopus citations

Abstract

The Zr₆₀Al_7.5Cu_17.5Ni₁₀Si₄B₁ (numbers indicate at.%) amorphous alloy was selected for an investigation of its crystallization kinetics and thermal stability because of its high activation energy of 370 kJ/mol for crystallization and its extended incubation time during isothermal annealing in the supercooled temperature region. The crystallization behavior and microstructure development during isothermal annealing were examined by isothermal differential scanning calorimetry, X-ray diffractometry and transmission electron microscopy (TEM). When annealing the Zr₆₀Al_7.5Cu_17.5Ni₁₀Si₄B₁ alloy isothermally at 714 K, Zr₂Cu crystals with average size about 5 nm were first observed at the early stage of 1% crystallization by TEM. The Zr₂Cu crystal size increases with annealing time, then reaches an average size of about 25 nm at the stage of 72% crystallization. In addition, the grain growth time as a function of the cube of particle size of the Zr₂Cu type crystalline phases presented a good linear relationship. This indicates that the crystal growth of the Zr₆₀Al_7.5Cu_17.5Ni₁₀Si₄B₁ alloy is a thermally activated process. The activation energy for growth of Zr₂Cu particles in the Zr₆₀Al_7.5 Cu_17.5Ni₁₀Si₄B₁ amorphous alloy is found to be 210 ± 25 kJ/mol. The lower activation energy of crystal growth during crystallization in comparison with 440 kJ/mol for crystallization in Zr₆₅Cu₃₅ corresponds to the rearrangement of other smaller atoms in the glass, such as Al or Si (compare to Zr).

Original language	English
Pages (from-to)	511-516
Number of pages	6
Journal	Materials Science and Engineering A
Volume	449-451
DOIs	https://doi.org/10.1016/j.msea.2006.02.395
State	Published - 25 Mar 2007

Keywords

Amorphous alloy
Crystallization kinetics
Grain growth
TEM observation
Zirconium-based alloy

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10.1016/j.msea.2006.02.395

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Jang, J. S. C., Wang, I. H., Chang, L. J., Chen, G. J., Hung, T. H., & Huang, J. C. (2007). Crystallization kinetics and thermal stability of the Zr₆₀Al_7.5Cu_17.5Ni₁₀Si₄B₁ amorphous alloy studied by isothermal differential scanning calorimetry and transmission electron microscopy. Materials Science and Engineering A, 449-451, 511-516. https://doi.org/10.1016/j.msea.2006.02.395

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title = "Crystallization kinetics and thermal stability of the Zr60Al7.5Cu17.5Ni10Si4 B1 amorphous alloy studied by isothermal differential scanning calorimetry and transmission electron microscopy",

abstract = "The Zr60Al7.5Cu17.5Ni10Si4 B1 (numbers indicate at.%) amorphous alloy was selected for an investigation of its crystallization kinetics and thermal stability because of its high activation energy of 370 kJ/mol for crystallization and its extended incubation time during isothermal annealing in the supercooled temperature region. The crystallization behavior and microstructure development during isothermal annealing were examined by isothermal differential scanning calorimetry, X-ray diffractometry and transmission electron microscopy (TEM). When annealing the Zr60Al7.5Cu17.5Ni10Si4 B1 alloy isothermally at 714 K, Zr2Cu crystals with average size about 5 nm were first observed at the early stage of 1% crystallization by TEM. The Zr2Cu crystal size increases with annealing time, then reaches an average size of about 25 nm at the stage of 72% crystallization. In addition, the grain growth time as a function of the cube of particle size of the Zr2Cu type crystalline phases presented a good linear relationship. This indicates that the crystal growth of the Zr60Al7.5Cu17.5Ni10Si4 B1 alloy is a thermally activated process. The activation energy for growth of Zr2Cu particles in the Zr60Al7.5 Cu17.5Ni10Si4B1 amorphous alloy is found to be 210 ± 25 kJ/mol. The lower activation energy of crystal growth during crystallization in comparison with 440 kJ/mol for crystallization in Zr65Cu35 corresponds to the rearrangement of other smaller atoms in the glass, such as Al or Si (compare to Zr).",

keywords = "Amorphous alloy, Crystallization kinetics, Grain growth, TEM observation, Zirconium-based alloy",

author = "Jang, {J. S.C.} and Wang, {I. H.} and Chang, {L. J.} and Chen, {G. J.} and Hung, {T. H.} and Huang, {J. C.}",

note = "Funding Information: The authors would like to gratefully acknowledge the sponsorship from the National Science Council of ROC under the project NSC93-2216-E-214-008 and NSC94-2218-E-110-009.",

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Crystallization kinetics and thermal stability of the Zr₆₀Al_7.5Cu_17.5Ni₁₀Si₄B₁ amorphous alloy studied by isothermal differential scanning calorimetry and transmission electron microscopy. / Jang, J. S.C.; Wang, I. H.; Chang, L. J. et al.
In: Materials Science and Engineering A, Vol. 449-451, 25.03.2007, p. 511-516.

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

TY - JOUR

T1 - Crystallization kinetics and thermal stability of the Zr60Al7.5Cu17.5Ni10Si4 B1 amorphous alloy studied by isothermal differential scanning calorimetry and transmission electron microscopy

AU - Jang, J. S.C.

AU - Wang, I. H.

AU - Chang, L. J.

AU - Chen, G. J.

AU - Hung, T. H.

AU - Huang, J. C.

N1 - Funding Information: The authors would like to gratefully acknowledge the sponsorship from the National Science Council of ROC under the project NSC93-2216-E-214-008 and NSC94-2218-E-110-009.

PY - 2007/3/25

Y1 - 2007/3/25

N2 - The Zr60Al7.5Cu17.5Ni10Si4 B1 (numbers indicate at.%) amorphous alloy was selected for an investigation of its crystallization kinetics and thermal stability because of its high activation energy of 370 kJ/mol for crystallization and its extended incubation time during isothermal annealing in the supercooled temperature region. The crystallization behavior and microstructure development during isothermal annealing were examined by isothermal differential scanning calorimetry, X-ray diffractometry and transmission electron microscopy (TEM). When annealing the Zr60Al7.5Cu17.5Ni10Si4 B1 alloy isothermally at 714 K, Zr2Cu crystals with average size about 5 nm were first observed at the early stage of 1% crystallization by TEM. The Zr2Cu crystal size increases with annealing time, then reaches an average size of about 25 nm at the stage of 72% crystallization. In addition, the grain growth time as a function of the cube of particle size of the Zr2Cu type crystalline phases presented a good linear relationship. This indicates that the crystal growth of the Zr60Al7.5Cu17.5Ni10Si4 B1 alloy is a thermally activated process. The activation energy for growth of Zr2Cu particles in the Zr60Al7.5 Cu17.5Ni10Si4B1 amorphous alloy is found to be 210 ± 25 kJ/mol. The lower activation energy of crystal growth during crystallization in comparison with 440 kJ/mol for crystallization in Zr65Cu35 corresponds to the rearrangement of other smaller atoms in the glass, such as Al or Si (compare to Zr).

AB - The Zr60Al7.5Cu17.5Ni10Si4 B1 (numbers indicate at.%) amorphous alloy was selected for an investigation of its crystallization kinetics and thermal stability because of its high activation energy of 370 kJ/mol for crystallization and its extended incubation time during isothermal annealing in the supercooled temperature region. The crystallization behavior and microstructure development during isothermal annealing were examined by isothermal differential scanning calorimetry, X-ray diffractometry and transmission electron microscopy (TEM). When annealing the Zr60Al7.5Cu17.5Ni10Si4 B1 alloy isothermally at 714 K, Zr2Cu crystals with average size about 5 nm were first observed at the early stage of 1% crystallization by TEM. The Zr2Cu crystal size increases with annealing time, then reaches an average size of about 25 nm at the stage of 72% crystallization. In addition, the grain growth time as a function of the cube of particle size of the Zr2Cu type crystalline phases presented a good linear relationship. This indicates that the crystal growth of the Zr60Al7.5Cu17.5Ni10Si4 B1 alloy is a thermally activated process. The activation energy for growth of Zr2Cu particles in the Zr60Al7.5 Cu17.5Ni10Si4B1 amorphous alloy is found to be 210 ± 25 kJ/mol. The lower activation energy of crystal growth during crystallization in comparison with 440 kJ/mol for crystallization in Zr65Cu35 corresponds to the rearrangement of other smaller atoms in the glass, such as Al or Si (compare to Zr).

KW - Amorphous alloy

KW - Crystallization kinetics

KW - Grain growth

KW - TEM observation

KW - Zirconium-based alloy

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DO - 10.1016/j.msea.2006.02.395

M3 - 期刊論文

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JO - Materials Science and Engineering A

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