Crystallization kinetics of Ti-Zr-Ni-Cu metallic glasses

Xinquan Guo; Dmitri Louzguine; Akihisa Inoue

doi:10.2320/matertrans.42.2406

Crystallization kinetics of Ti-Zr-Ni-Cu metallic glasses

Xinquan Guo, Dmitri Louzguine, Akihisa Inoue

Advanced Institute for Materials Research (AIMR)

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

8 Citations (Scopus)

Abstract

It was found that the Ti_45-xZr_xNi_45-zCu_z (0 ≤ x ≤ 10, 0 ≤ z ≤ 10) metallic glasses crystallize polymorphously and the crystal phase forms a solid solution of Zr and Cu in the TiNi phase. Differential scanning calorimetry (DSC) was used to study the crystallization kinetics of Ti-Zr-Ni-Cu metallic glasses near glass transition temperature. The fraction transformed y, as a function of time are of sigmoidal type at each temperature. For 0.10 ≤ y ≤ 0.85 the plots satisfy the Johnson-Mehl-Avrami equation and approximate to straight lines with exponent n varying from 3.1 to 3.9 as the annealing temperature increases. The activation energy for the crystallization of Ti₄₅Zr₅Ni₄₅Cu₅ metallic glass estimated from the temperature corresponding to 50% transformation is close to 380 kJ/mol.

Original language	English
Pages (from-to)	2406-2409
Number of pages	4
Journal	Materials Transactions
Volume	42
Issue number	11
DOIs	https://doi.org/10.2320/matertrans.42.2406
Publication status	Published - 2001 Nov

Keywords

Activation energy
Amorphous alloy
Differential scanning calorimetry
Isothermal crystallization kinetics
Titanium-zirconium-nickel-copper metallic glass

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Crystallization kinetics of Ti-Zr-Ni-Cu metallic glasses",

abstract = "It was found that the Ti45-xZrxNi45-zCuz (0 ≤ x ≤ 10, 0 ≤ z ≤ 10) metallic glasses crystallize polymorphously and the crystal phase forms a solid solution of Zr and Cu in the TiNi phase. Differential scanning calorimetry (DSC) was used to study the crystallization kinetics of Ti-Zr-Ni-Cu metallic glasses near glass transition temperature. The fraction transformed y, as a function of time are of sigmoidal type at each temperature. For 0.10 ≤ y ≤ 0.85 the plots satisfy the Johnson-Mehl-Avrami equation and approximate to straight lines with exponent n varying from 3.1 to 3.9 as the annealing temperature increases. The activation energy for the crystallization of Ti45Zr5Ni45Cu5 metallic glass estimated from the temperature corresponding to 50% transformation is close to 380 kJ/mol.",

keywords = "Activation energy, Amorphous alloy, Differential scanning calorimetry, Isothermal crystallization kinetics, Titanium-zirconium-nickel-copper metallic glass",

author = "Xinquan Guo and Dmitri Louzguine and Akihisa Inoue",

year = "2001",

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AU - Guo, Xinquan

AU - Louzguine, Dmitri

AU - Inoue, Akihisa

PY - 2001/11

Y1 - 2001/11

N2 - It was found that the Ti45-xZrxNi45-zCuz (0 ≤ x ≤ 10, 0 ≤ z ≤ 10) metallic glasses crystallize polymorphously and the crystal phase forms a solid solution of Zr and Cu in the TiNi phase. Differential scanning calorimetry (DSC) was used to study the crystallization kinetics of Ti-Zr-Ni-Cu metallic glasses near glass transition temperature. The fraction transformed y, as a function of time are of sigmoidal type at each temperature. For 0.10 ≤ y ≤ 0.85 the plots satisfy the Johnson-Mehl-Avrami equation and approximate to straight lines with exponent n varying from 3.1 to 3.9 as the annealing temperature increases. The activation energy for the crystallization of Ti45Zr5Ni45Cu5 metallic glass estimated from the temperature corresponding to 50% transformation is close to 380 kJ/mol.

AB - It was found that the Ti45-xZrxNi45-zCuz (0 ≤ x ≤ 10, 0 ≤ z ≤ 10) metallic glasses crystallize polymorphously and the crystal phase forms a solid solution of Zr and Cu in the TiNi phase. Differential scanning calorimetry (DSC) was used to study the crystallization kinetics of Ti-Zr-Ni-Cu metallic glasses near glass transition temperature. The fraction transformed y, as a function of time are of sigmoidal type at each temperature. For 0.10 ≤ y ≤ 0.85 the plots satisfy the Johnson-Mehl-Avrami equation and approximate to straight lines with exponent n varying from 3.1 to 3.9 as the annealing temperature increases. The activation energy for the crystallization of Ti45Zr5Ni45Cu5 metallic glass estimated from the temperature corresponding to 50% transformation is close to 380 kJ/mol.

KW - Activation energy

KW - Amorphous alloy

KW - Differential scanning calorimetry

KW - Isothermal crystallization kinetics

KW - Titanium-zirconium-nickel-copper metallic glass

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Crystallization kinetics of Ti-Zr-Ni-Cu metallic glasses

Abstract

Keywords

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