In-situ SEM characterization and numerical modelling of bainite formation and impingement of a medium- carbon, low-alloy steel

A novel in-situ scanning electron microscope (SEM) characterization technique for observing phase transformation is developed and its results studied and compared to well-founded experimental ex-situ methods as well as numerical modelling of bainite formation. Phase transformation kinetics are compa...

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Main Authors: O. Seppälä, A. Pohjonen, J. Mendonça, V. Javaheri, R. Podor, H. Singh, J. Larkiola
Format: Article
Language:English
Published: Elsevier 2023-06-01
Series:Materials & Design
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S0264127523003714
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author O. Seppälä
A. Pohjonen
J. Mendonça
V. Javaheri
R. Podor
H. Singh
J. Larkiola
author_facet O. Seppälä
A. Pohjonen
J. Mendonça
V. Javaheri
R. Podor
H. Singh
J. Larkiola
author_sort O. Seppälä
collection DOAJ
description A novel in-situ scanning electron microscope (SEM) characterization technique for observing phase transformation is developed and its results studied and compared to well-founded experimental ex-situ methods as well as numerical modelling of bainite formation. Phase transformation kinetics are compared between the in-situ SEM, dilatometry test as well as mean field and Cellular Automata (CA) models. Microstructural evolution during phase transformation is compared between in-situ SEM, ex-situ EBSD and CA model results. The in-situ method allows for direct observation of bainite sheaf growth and impingement. The in-situ results in combination with EBSD data can be used to parameterize the CA model sheaf nucleation and growth equations.
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spelling doaj.art-8f843e476b9b468aa238dfcd71b3bd172023-06-10T04:26:57ZengElsevierMaterials & Design0264-12752023-06-01230111956In-situ SEM characterization and numerical modelling of bainite formation and impingement of a medium- carbon, low-alloy steelO. Seppälä0A. Pohjonen1J. Mendonça2V. Javaheri3R. Podor4H. Singh5J. Larkiola6Materials and Mechanical Engineering, University of Oulu, Oulu 90014, Finland; Corresponding author.Materials and Mechanical Engineering, University of Oulu, Oulu 90014, FinlandICSM, Univ Montpellier, CNRS, CEA, ENSCM, Marcoule, France; NewTEC Scientific, Caveirac, FranceMaterials and Mechanical Engineering, University of Oulu, Oulu 90014, FinlandICSM, Univ Montpellier, CNRS, CEA, ENSCM, Marcoule, FranceNano and Molecular Systems Research Unit, University of Oulu, Oulu 90014, FinlandMaterials and Mechanical Engineering, University of Oulu, Oulu 90014, FinlandA novel in-situ scanning electron microscope (SEM) characterization technique for observing phase transformation is developed and its results studied and compared to well-founded experimental ex-situ methods as well as numerical modelling of bainite formation. Phase transformation kinetics are compared between the in-situ SEM, dilatometry test as well as mean field and Cellular Automata (CA) models. Microstructural evolution during phase transformation is compared between in-situ SEM, ex-situ EBSD and CA model results. The in-situ method allows for direct observation of bainite sheaf growth and impingement. The in-situ results in combination with EBSD data can be used to parameterize the CA model sheaf nucleation and growth equations.http://www.sciencedirect.com/science/article/pii/S0264127523003714SteelBainitePhase transformationIn-situ characterizationModellingCellular automata
spellingShingle O. Seppälä
A. Pohjonen
J. Mendonça
V. Javaheri
R. Podor
H. Singh
J. Larkiola
In-situ SEM characterization and numerical modelling of bainite formation and impingement of a medium- carbon, low-alloy steel
Materials & Design
Steel
Bainite
Phase transformation
In-situ characterization
Modelling
Cellular automata
title In-situ SEM characterization and numerical modelling of bainite formation and impingement of a medium- carbon, low-alloy steel
title_full In-situ SEM characterization and numerical modelling of bainite formation and impingement of a medium- carbon, low-alloy steel
title_fullStr In-situ SEM characterization and numerical modelling of bainite formation and impingement of a medium- carbon, low-alloy steel
title_full_unstemmed In-situ SEM characterization and numerical modelling of bainite formation and impingement of a medium- carbon, low-alloy steel
title_short In-situ SEM characterization and numerical modelling of bainite formation and impingement of a medium- carbon, low-alloy steel
title_sort in situ sem characterization and numerical modelling of bainite formation and impingement of a medium carbon low alloy steel
topic Steel
Bainite
Phase transformation
In-situ characterization
Modelling
Cellular automata
url http://www.sciencedirect.com/science/article/pii/S0264127523003714
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