Corrosion-Mechanical Behavior of T91 and 14-19Cr ODS Steels Exposed to Flowing Lead-Bismuth

Abstract:

This work describes the behavior of T91 (9Cr ferritic-martensitic steel), MA957 ODS (14%Cr, 0.3Mo, 0.9Ti, 0.25%Y₂O₃) and PM2000 ODS (19%Cr, 5%Al, 0.25%Y₂O₃) steels produced by mechanical alloying process, after long-term exposure to liquid lead-bismuth eutectic. Small bend specimens were pre-strained, then exposed to flowing lead-bismuth at 350°C for 100, 500 and 1000 hours. After exposure, the specimens were examined by using SEM equipped with EDX. The resulting changes of surface and built-up oxide layers are discussed. Liquid Metal Embrittlement, LME, crack initiation was not observed in the specimens. The absence of LME in these conditions is discussed.

• Periodical: Solid State Phenomena (Volume 258)
• Pages: 627-630
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.258.627
• Online since: December 2016
• Authors: Anna Hojna*, Hynek Hadraba, Fosca di Gabriele, Roman Husak, Ivo Kuběna, Lucia Rozumová, Daniela Marušáková
• Keywords: Environmental Effects, Ferritic-Martensitic Steel, Microanalysis, Nanostructured Materials

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