Orientation relationship of the austenite-to-ferrite transformation in austenitic stainless steels due to dissolution corrosion in contact with liquid Pb-Bi eutectic

E. Charalampopoulou, N. Cautaerts, T. Van der Donck, D. Schryvers, K. Lambrinou, R. Delville

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The orientation relationship of an austenite-to-ferrite phase transformation in 316L stainless steels induced by the loss of austenite stabilizers resulting from the steel dissolution corrosion in liquid Pb-Bi eutectic was studied by means of electron backscatter diffraction. The misorientations at the austenite/ferrite interface were compared to the prevailing orientation relationship models in steels. The Pitsch orientation relationship model was found to be predominant, which is unusual for austenite-to-ferrite bulk transformations in steels. The nature of this particular transformation, which involves loss of steel alloying elements and the presence of an interfacial liquid metal layer, is discussed to explain this finding.

LanguageEnglish
Pages66-70
Number of pages5
JournalScripta Materialia
Volume167
Early online date6 Apr 2019
DOIs
Publication statusPublished - 1 Jul 2019
Externally publishedYes

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austenitic stainless steels
Steel
Austenitic stainless steel
austenite
eutectics
Austenite
Contacts (fluid mechanics)
Eutectics
Ferrite
ferrites
corrosion
dissolving
Dissolution
steels
Corrosion
Liquids
liquids
Stainless Steel
Alloying elements
liquid metals

Cite this

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title = "Orientation relationship of the austenite-to-ferrite transformation in austenitic stainless steels due to dissolution corrosion in contact with liquid Pb-Bi eutectic",
abstract = "The orientation relationship of an austenite-to-ferrite phase transformation in 316L stainless steels induced by the loss of austenite stabilizers resulting from the steel dissolution corrosion in liquid Pb-Bi eutectic was studied by means of electron backscatter diffraction. The misorientations at the austenite/ferrite interface were compared to the prevailing orientation relationship models in steels. The Pitsch orientation relationship model was found to be predominant, which is unusual for austenite-to-ferrite bulk transformations in steels. The nature of this particular transformation, which involves loss of steel alloying elements and the presence of an interfacial liquid metal layer, is discussed to explain this finding.",
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author = "E. Charalampopoulou and N. Cautaerts and {Van der Donck}, T. and D. Schryvers and K. Lambrinou and R. Delville",
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Orientation relationship of the austenite-to-ferrite transformation in austenitic stainless steels due to dissolution corrosion in contact with liquid Pb-Bi eutectic. / Charalampopoulou, E.; Cautaerts, N.; Van der Donck, T.; Schryvers, D.; Lambrinou, K.; Delville, R.

In: Scripta Materialia, Vol. 167, 01.07.2019, p. 66-70.

Research output: Contribution to journalArticle

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AU - Charalampopoulou, E.

AU - Cautaerts, N.

AU - Van der Donck, T.

AU - Schryvers, D.

AU - Lambrinou, K.

AU - Delville, R.

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AB - The orientation relationship of an austenite-to-ferrite phase transformation in 316L stainless steels induced by the loss of austenite stabilizers resulting from the steel dissolution corrosion in liquid Pb-Bi eutectic was studied by means of electron backscatter diffraction. The misorientations at the austenite/ferrite interface were compared to the prevailing orientation relationship models in steels. The Pitsch orientation relationship model was found to be predominant, which is unusual for austenite-to-ferrite bulk transformations in steels. The nature of this particular transformation, which involves loss of steel alloying elements and the presence of an interfacial liquid metal layer, is discussed to explain this finding.

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KW - Electron backscatter diffraction (EBSD)

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KW - Orientation relationships

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