Overview of 9Cr steels properties for structural application in sodium fast reactors
Résumé
A research and development programme has been launched by CEA, EDF and AREVA for the
choice and qualification of material for sodium fast reactor (SFR) structural components. The
requirements on steam generator (SG) are demanding, with operating temperatures ranging from
240°C to 530°C in water/steam and in sodium for an extended design life of several decades. The
selection of the SG materials is based on many characteristics: fabrication, welding, thermal
properties, mechanical strength at low and high temperature, environmental resistance. 9%Cr
steels which are relevant candidate alloys for different designs of SGs have been extensively
studied in the past decade. The objective of this paper is to review some advances made at CEA
on determining properties of the X10CrMoVNb9-1 steel (hereafter named “grade 91”): welding,
modelling of cyclic softening, modelling of long-term creep, compatibility with liquid sodium,
corrosion in steam.
Domaines
Sciences de l'ingénieur [physics]Origine | Fichiers produits par l'(les) auteur(s) |
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