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Article Dans Une Revue Corrosion Science Année : 2023

Pitting corrosion behaviour in sodium chloride solution of intermetallic centreline stringers in super duplex stainless steels

V. Vignal
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P. Huguenin
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F. Krajcarz
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Résumé

Although manufacturers have optimized metallurgical routes to deliver super duplex stainless steels free from intermetallic phases, a segregated zone is generally formed close to mid-thickness for flat products. This zone may contain a small amount of sigma phase particles in the form of centerline intermetallic stringers. In this paper, their corrosion behaviour is investigated in sodium chloride solution, by coupling non-electrochemical and electrochemical techniques at the global and local scales. Corrosion mechanisms at centerline intermetallic stringers is then discussed and weak points in the sample are identified.

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hal-04286127 , version 1 (15-11-2023)

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P. Erazmus-Vignal, V. Vignal, P. Huguenin, F. Krajcarz. Pitting corrosion behaviour in sodium chloride solution of intermetallic centreline stringers in super duplex stainless steels. Corrosion Science, 2023, 223, pp.111482. ⟨10.1016/j.corsci.2023.111482⟩. ⟨hal-04286127⟩
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