advanced materials for fuel cladding in sodium fast reactors in ...
advanced materials for fuel cladding in sodium fast reactors in ...
advanced materials for fuel cladding in sodium fast reactors in ...
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2- ODS Steels (6/6)Stability under irradiationMechanical properties (on grade DY = prelim<strong>in</strong>ary ODS grade Fe13 Cr2Ti1,5 Mo + 0,5 Y 2 O 3 -TiO 2 )4 Elong. (%)3unirr.Be<strong>for</strong>e irradiation484°C - 76 dpa21UE = TE0-300 0 300 600 900RuptureDuctile "Cleavage"DuctilePresent grades (e.g. developed at CEA) stableLarge (Y,Ti) 2 O 3 – Ø > 10-100 nm• Occurrence of damage with dose but rema<strong>in</strong> crystall<strong>in</strong>e• Slight dissolution under irradiationNano-sized (Y,Ti,O) oxides – Ø < 10 nm• No obvious evolution <strong>in</strong> size… High embrittlement…Need of optimized gradesand dedicated R&D programup to 45 dpa at 500°C(<strong>in</strong> situ TEM)[Lescoat JNM 2011]Fe18Cr1W0.4Ti + 0.6 Y 2 O 3Marion LE FLEM, Advanced Materials <strong>for</strong> Fuel Cladd<strong>in</strong>g <strong>in</strong> Sodium Fast Reactors 13
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