Grain Boundary Nature and Localized Corrosion in 304 Austenitic Stainless Steel

I. Samajdar; P. Ahmedavadi; D.N. Wasnik; Vivekanand Kain; Bert Verlinden; P.K. Dey

doi:10.4028/www.scientific.net/MSF.495-497.453

Paper Titles

Rolling and Recrystallization Textures in Asymmetrically Rolled Silicon Steel Thin Strip
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Effect of Magnetic Annealing on Recrystallization Texture in Silicon Steel Thin Strip
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Texture Changes of Carbon Steel and Stainless Steel as a Result of Wear
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Orientation Relationship during Partial α-γ-Phase Transformation in Microalloyed Steels
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Grain Boundary Nature and Localized Corrosion in 304 Austenitic Stainless Steel
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Microscale Characterisation of Deformed Microstructures of TRIP-Assisted and Multiphase Steels
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Characteristics of Recrystallization Texture Evolution in High Magnetic Field for Interstitial Free (IF) Steel Sheet
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Texture Development during Final Annealing in Nonoriented Electrical Steels
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Texture Evolution during Direct and Reversed Hot Torsion Tests of Stabilized Ferritic Stainless Steels
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Grain Boundary Nature and Localized Corrosion in 304 Austenitic Stainless Steel

Abstract:

The present study had one broad objective – to systematically characterize effects of overall grain boundary nature on localized corrosion, intergranular corrosion (IGC) and stress corrosion cracking (IGSCC), of type 304 (UNS S 30400) austenitic stainless steel. Various combinations of cold rolling and solution annealing, were applied to alter relative the relative concentrations of ‘special’ or low CSL boundaries and to relate them with the local corrosion resistance, IGC and IGSCC, after respective sensitization treatments. It has been shown that both extreme high and low concentration of random (or high energy) boundaries can provide an effective means of control for localized corrosion, degree of sensitization (DOS), IGC and IGSCC, - the improvement in localized corrosion resistance at extreme grain boundary randomization being more effective.