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Morphology and Kinetics Evolution of Nanoscale Phase in Fe–Cr Alloys under External Strain

Uniaxial strain was applied to aging Fe–Cr alloys to study the morphological orientation and kinetics of the nanoscale α′ phase by utilizing phase-field simulation. The effects of applied uniaxial compressive and tensile strain on the two and three-dimensional morphology as well as on the separation...

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Autores principales: Zhu, Lihui, Li, Yongsheng, Shi, Shujing, Yan, Zhengwei, Chen, Jing, Maqbool, Shahid
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6410232/
https://www.ncbi.nlm.nih.gov/pubmed/30791441
http://dx.doi.org/10.3390/nano9020294
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author Zhu, Lihui
Li, Yongsheng
Shi, Shujing
Yan, Zhengwei
Chen, Jing
Maqbool, Shahid
author_facet Zhu, Lihui
Li, Yongsheng
Shi, Shujing
Yan, Zhengwei
Chen, Jing
Maqbool, Shahid
author_sort Zhu, Lihui
collection PubMed
description Uniaxial strain was applied to aging Fe–Cr alloys to study the morphological orientation and kinetics of the nanoscale α′ phase by utilizing phase-field simulation. The effects of applied uniaxial compressive and tensile strain on the two and three-dimensional morphology as well as on the separation kinetics of the α′ phase are quantitatively clarified. Compared with the applied uniaxial tensile strain, the applied uniaxial compressive strain shows a greater effect on the rate of phase separation, lath shape morphology and an increased rate of growth and coarsening in the α′ phase, the boundary of the α + α′ phase region is widened influenced by the applied compressive strain, while the applied tensile strain results in an increase of particle number density and a decrease of particle radius. The peak value of particle size distribution of the α′ phase increases with aging time, while an opposite trend is shown under the applied strain, and there is an obvious deviation from the theoretical distribution of Lifshitz–Slyozov–Wagner under compressive strain. The orientation morphology and kinetic change show the substantial effects of applied strain on the phase separation and supplies the method for the morphological control of nanoscale particles.
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spelling pubmed-64102322019-03-29 Morphology and Kinetics Evolution of Nanoscale Phase in Fe–Cr Alloys under External Strain Zhu, Lihui Li, Yongsheng Shi, Shujing Yan, Zhengwei Chen, Jing Maqbool, Shahid Nanomaterials (Basel) Article Uniaxial strain was applied to aging Fe–Cr alloys to study the morphological orientation and kinetics of the nanoscale α′ phase by utilizing phase-field simulation. The effects of applied uniaxial compressive and tensile strain on the two and three-dimensional morphology as well as on the separation kinetics of the α′ phase are quantitatively clarified. Compared with the applied uniaxial tensile strain, the applied uniaxial compressive strain shows a greater effect on the rate of phase separation, lath shape morphology and an increased rate of growth and coarsening in the α′ phase, the boundary of the α + α′ phase region is widened influenced by the applied compressive strain, while the applied tensile strain results in an increase of particle number density and a decrease of particle radius. The peak value of particle size distribution of the α′ phase increases with aging time, while an opposite trend is shown under the applied strain, and there is an obvious deviation from the theoretical distribution of Lifshitz–Slyozov–Wagner under compressive strain. The orientation morphology and kinetic change show the substantial effects of applied strain on the phase separation and supplies the method for the morphological control of nanoscale particles. MDPI 2019-02-19 /pmc/articles/PMC6410232/ /pubmed/30791441 http://dx.doi.org/10.3390/nano9020294 Text en © 2019 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
Zhu, Lihui
Li, Yongsheng
Shi, Shujing
Yan, Zhengwei
Chen, Jing
Maqbool, Shahid
Morphology and Kinetics Evolution of Nanoscale Phase in Fe–Cr Alloys under External Strain
title Morphology and Kinetics Evolution of Nanoscale Phase in Fe–Cr Alloys under External Strain
title_full Morphology and Kinetics Evolution of Nanoscale Phase in Fe–Cr Alloys under External Strain
title_fullStr Morphology and Kinetics Evolution of Nanoscale Phase in Fe–Cr Alloys under External Strain
title_full_unstemmed Morphology and Kinetics Evolution of Nanoscale Phase in Fe–Cr Alloys under External Strain
title_short Morphology and Kinetics Evolution of Nanoscale Phase in Fe–Cr Alloys under External Strain
title_sort morphology and kinetics evolution of nanoscale phase in fe–cr alloys under external strain
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6410232/
https://www.ncbi.nlm.nih.gov/pubmed/30791441
http://dx.doi.org/10.3390/nano9020294
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