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

Evangelia Charalampopoulou, Niels Cautaerts, Tom Van der Donck, Dominique Schryvers, Konstantza Lambrinou, Rémi Delville

    Research outputpeer-review


    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.
    Original languageEnglish
    Article number167
    Pages (from-to)66-70
    Number of pages5
    JournalScripta Materialia
    StatePublished - 27 Mar 2019

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