- Al-alloys (used mostly in MTRs) would not sustain this relatively high temperature and also the irradiation conditions would yield to severe embrittlment of this class of materials
- Ni-based alloys (used mainly in PWR) are having a high affinity to dissolve in Pb-Bi beside their mirostructural instability under irradiation
- Austenitic steels (used mainly as internals in LWRs ) are very susceptible to irradiation induced swelling and creep. In addition they showed a poor resistance to corrosion in liquid Pb-alloys.
- Zr-alloys (used as fuel cladding in LWRs) have shown drastic loss of strenght and ductility under high temperature irradiation especially in the presence of hydrogen.
- Ferritic-Martensitic steels ( wrapper tubes in Phenix, candidate materials for Fast reactors and fusion), appear to be as promising candidate materials both for fuel cladding and structures.
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