Radiation embrittlement of the materials of fuel assemblies in the temperature range corresponding to maximum swelling
Copyright policy )Radiation embrittlement of the materials of fuel assemblies in the temperature range corresponding to maximum swelling
The efficiency of the fuel assemblies of the fast reactors is determined to a large extent by the resistance of the materials of the jackets and the sheaths to radiational swelling and embrittlement. The effect of swelling on the mechanical properties of the 0KhI6NI5M3B steel was established in our previous study [i]. This paper deals with a study of the main regularities of radiational swelling in the temperature range corresponding to maximum swelling and the relationship between the phenomena of embrittlement and swelling in the steels 0KhI6NISM3B and KhI8NIOT (the materials of the BOR-60 fuel assemblies). Experiments were carried out using specimens cut out from the hexagonal sheaths (KhI8NIOT) and the jackets of the standard BOR-60 fuel elements (0KhI6NI5M3B). The initial heat treatment of the steels consisted of austenitization.
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