Primary crystallization in Fe65Nb10B25 metallic glass

M.T. Clavaguera-Mora; J. Torrens-Serra; J. Rodriguez-Viejo

doi:10.1016/j.jnoncrysol.2008.05.079

Primary crystallization in Fe₆₅Nb₁₀B₂₅metallic glass

M.T. Clavaguera-Mora, J. Torrens-Serra, J. Rodriguez-Viejo

Department of Physics

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

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Abstract

The kinetic analysis of primary crystallization under heat treatment of Fe65Nb10B25 metallic glass is obtained from quantitative microstructural data in combination with calorimetric data. The mathematical description is grounded on the Kolmogorov-Johnson-Mehl-Avrami model generalized to account for the compositional changes of the parent phase, responsible for the decreasing of both the nucleation frequency and the growth rate of the primary grains. The modeling and calculation of the transformation rate has been performed to determine the optimum range of values of the viscosity, driving force for crystallization and interfacial energy, leading to a reasonable agreement with the experimental kinetic data. It is shown that the indicated modeling procedure is quite suitable to obtain an indirect evaluation of the interfacial energy between Fe23B6-type nanocrystals and a disordered matrix with global Fe65Nb10B25 composition. © 2008 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	5120-5122
Journal	Journal of Non-Crystalline Solids
Volume	354
Issue number	47-51
DOIs	https://doi.org/10.1016/j.jnoncrysol.2008.05.079
Publication status	Published - 1 Dec 2008

Keywords

Amorphous metals, metallic glasses
Crystal growth
Crystallization
Nucleation

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10.1016/j.jnoncrysol.2008.05.079

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title = "Primary crystallization in Fe65Nb10B25 metallic glass",

abstract = "The kinetic analysis of primary crystallization under heat treatment of Fe65Nb10B25 metallic glass is obtained from quantitative microstructural data in combination with calorimetric data. The mathematical description is grounded on the Kolmogorov-Johnson-Mehl-Avrami model generalized to account for the compositional changes of the parent phase, responsible for the decreasing of both the nucleation frequency and the growth rate of the primary grains. The modeling and calculation of the transformation rate has been performed to determine the optimum range of values of the viscosity, driving force for crystallization and interfacial energy, leading to a reasonable agreement with the experimental kinetic data. It is shown that the indicated modeling procedure is quite suitable to obtain an indirect evaluation of the interfacial energy between Fe23B6-type nanocrystals and a disordered matrix with global Fe65Nb10B25 composition. {\textcopyright} 2008 Elsevier B.V. All rights reserved.",

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author = "M.T. Clavaguera-Mora and J. Torrens-Serra and J. Rodriguez-Viejo",

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AU - Clavaguera-Mora, M.T.

AU - Torrens-Serra, J.

AU - Rodriguez-Viejo, J.

PY - 2008/12/1

Y1 - 2008/12/1

N2 - The kinetic analysis of primary crystallization under heat treatment of Fe65Nb10B25 metallic glass is obtained from quantitative microstructural data in combination with calorimetric data. The mathematical description is grounded on the Kolmogorov-Johnson-Mehl-Avrami model generalized to account for the compositional changes of the parent phase, responsible for the decreasing of both the nucleation frequency and the growth rate of the primary grains. The modeling and calculation of the transformation rate has been performed to determine the optimum range of values of the viscosity, driving force for crystallization and interfacial energy, leading to a reasonable agreement with the experimental kinetic data. It is shown that the indicated modeling procedure is quite suitable to obtain an indirect evaluation of the interfacial energy between Fe23B6-type nanocrystals and a disordered matrix with global Fe65Nb10B25 composition. © 2008 Elsevier B.V. All rights reserved.

AB - The kinetic analysis of primary crystallization under heat treatment of Fe65Nb10B25 metallic glass is obtained from quantitative microstructural data in combination with calorimetric data. The mathematical description is grounded on the Kolmogorov-Johnson-Mehl-Avrami model generalized to account for the compositional changes of the parent phase, responsible for the decreasing of both the nucleation frequency and the growth rate of the primary grains. The modeling and calculation of the transformation rate has been performed to determine the optimum range of values of the viscosity, driving force for crystallization and interfacial energy, leading to a reasonable agreement with the experimental kinetic data. It is shown that the indicated modeling procedure is quite suitable to obtain an indirect evaluation of the interfacial energy between Fe23B6-type nanocrystals and a disordered matrix with global Fe65Nb10B25 composition. © 2008 Elsevier B.V. All rights reserved.

KW - Amorphous metals, metallic glasses

KW - Crystal growth

KW - Crystallization

KW - Nucleation

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DO - 10.1016/j.jnoncrysol.2008.05.079

M3 - Article

VL - 354

SP - 5120

EP - 5122

IS - 47-51

ER -

Primary crystallization in Fe₆₅Nb₁₀B₂₅metallic glass

Abstract

Keywords

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