A Non-Isokinetic Approach for Modeling Solid-State Transformations: Application to Crystallization of a Fe-B Amorphous Alloy

Solid-state phase transformations like crystallization of amorphous alloys can be described by an analytical model incorporating a nucleation index a. However, this model cannot be used to examine isochronal transformations with abrupt changing of enthalpy differences performed with differential sca...

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Detalles Bibliográficos
Autores principales: Ma, Yazhu, Zhang, Yubing, Liu, Feng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7827329/
https://www.ncbi.nlm.nih.gov/pubmed/33429990
http://dx.doi.org/10.3390/ma14020292
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author Ma, Yazhu
Zhang, Yubing
Liu, Feng
author_facet Ma, Yazhu
Zhang, Yubing
Liu, Feng
author_sort Ma, Yazhu
collection PubMed
description Solid-state phase transformations like crystallization of amorphous alloys can be described by an analytical model incorporating a nucleation index a. However, this model cannot be used to examine isochronal transformations with abrupt changing of enthalpy differences performed with differential scanning calorimetry. Based on the model, a non-isokinetic approach is proposed and applied to analyze the isochronal crystallization kinetics of Fe(85)B(15) amorphous alloy. The approach enabled us to obtain the kinetic parameters and activation energies for nucleation and growth.
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spelling pubmed-78273292021-01-25 A Non-Isokinetic Approach for Modeling Solid-State Transformations: Application to Crystallization of a Fe-B Amorphous Alloy Ma, Yazhu Zhang, Yubing Liu, Feng Materials (Basel) Article Solid-state phase transformations like crystallization of amorphous alloys can be described by an analytical model incorporating a nucleation index a. However, this model cannot be used to examine isochronal transformations with abrupt changing of enthalpy differences performed with differential scanning calorimetry. Based on the model, a non-isokinetic approach is proposed and applied to analyze the isochronal crystallization kinetics of Fe(85)B(15) amorphous alloy. The approach enabled us to obtain the kinetic parameters and activation energies for nucleation and growth. MDPI 2021-01-08 /pmc/articles/PMC7827329/ /pubmed/33429990 http://dx.doi.org/10.3390/ma14020292 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ma, Yazhu
Zhang, Yubing
Liu, Feng
A Non-Isokinetic Approach for Modeling Solid-State Transformations: Application to Crystallization of a Fe-B Amorphous Alloy
title A Non-Isokinetic Approach for Modeling Solid-State Transformations: Application to Crystallization of a Fe-B Amorphous Alloy
title_full A Non-Isokinetic Approach for Modeling Solid-State Transformations: Application to Crystallization of a Fe-B Amorphous Alloy
title_fullStr A Non-Isokinetic Approach for Modeling Solid-State Transformations: Application to Crystallization of a Fe-B Amorphous Alloy
title_full_unstemmed A Non-Isokinetic Approach for Modeling Solid-State Transformations: Application to Crystallization of a Fe-B Amorphous Alloy
title_short A Non-Isokinetic Approach for Modeling Solid-State Transformations: Application to Crystallization of a Fe-B Amorphous Alloy
title_sort non-isokinetic approach for modeling solid-state transformations: application to crystallization of a fe-b amorphous alloy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7827329/
https://www.ncbi.nlm.nih.gov/pubmed/33429990
http://dx.doi.org/10.3390/ma14020292
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