Simulation of ferroelastic phase formation using phase-field model

Mayu Muramatsu, K. Yashiro, T. Kawada, K. Terada

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In order to predict the formation of ferroelastic phases in crystal grains of La0.6Sr0.4Co0.2Fe0.8O3 δ (LSCF), which is a common material used for solid oxide fuel cells (SOFCs), we propose an analysis method based on a phase-field model. The phase-field model equipped with the elastic energy is introduced to realize the ferroelastic phase formation in a crystal grain. The finite element method (FEM) is employed to solve the phase transformation, and strain distributions are also calculated by FEM. On the basis of the developed analysis method, some numerical examples of analysis are performed to reproduce the deformation-induced nucleation and growth of ferroelastic phases of LSCF. Various microstructures are obtained from the simulations in accordance with the initial microstructure and their tendencies are discussed. These microstructures are reproduced by the proposed analysis method based on finite element method, which enables us to evaluate the deformation field in terms of changes of shape and stress.

Original languageEnglish
JournalInternational Journal of Mechanical Sciences
DOIs
Publication statusAccepted/In press - 2018 Jan 1
Externally publishedYes

Fingerprint

finite element method
Finite element method
microstructure
Microstructure
Crystals
simulation
strain distribution
solid oxide fuel cells
Solid oxide fuel cells (SOFC)
crystals
phase transformations
Numerical methods
tendencies
Nucleation
Phase transitions
nucleation
energy

Keywords

  • Ferroelasticity
  • LSCF
  • Phase transformation
  • Phase-field model
  • SOFC

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Simulation of ferroelastic phase formation using phase-field model. / Muramatsu, Mayu; Yashiro, K.; Kawada, T.; Terada, K.

In: International Journal of Mechanical Sciences, 01.01.2018.

Research output: Contribution to journalArticle

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N2 - In order to predict the formation of ferroelastic phases in crystal grains of La0.6Sr0.4Co0.2Fe0.8O3 − δ (LSCF), which is a common material used for solid oxide fuel cells (SOFCs), we propose an analysis method based on a phase-field model. The phase-field model equipped with the elastic energy is introduced to realize the ferroelastic phase formation in a crystal grain. The finite element method (FEM) is employed to solve the phase transformation, and strain distributions are also calculated by FEM. On the basis of the developed analysis method, some numerical examples of analysis are performed to reproduce the deformation-induced nucleation and growth of ferroelastic phases of LSCF. Various microstructures are obtained from the simulations in accordance with the initial microstructure and their tendencies are discussed. These microstructures are reproduced by the proposed analysis method based on finite element method, which enables us to evaluate the deformation field in terms of changes of shape and stress.

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