Recently, the research team of the Institute of Nuclear Energy Safety made important progress in the research on the safety of welded structures of China ’s neutron-resistant radiation steel (hereinafter referred to as “CLAM steel”), completed the cold crack sensitivity study of CLAM steel, and verified its international thermal nuclear The safety and reliability of the fusion experimental reactor (ITER) experimental cladding module (TBM) service was published in Fusion Engineering and Design, an international fusion engineering authority journal.
CLAM steel with complete martensite structure is prone to cold cracks during welding, and the reliability of the weld joint is directly related to the service safety of the fusion reactor cladding. To assess this issue, researchers conducted a welding crack sensitivity study of CLAM steel using ISO international standards. The results show that the precise control of pre-weld pre-weld and post-weld cooling processes can avoid the occurrence of cold cracks in CLAM steel welding and obtain good welded joints, which provides technical support for the development of key components of advanced nuclear energy systems such as fusion reactors in the future.
CLAM steel is a Chinese neutron radiation resistant steel with independent intellectual property rights developed by the research team of the Nuclear Energy Safety Institute. It can be used in advanced nuclear energy systems such as fusion reactors, fusion fission hybrid reactors and fission lead-based reactors. This research was supported by the National Magnetic Restricted Fusion Energy Development Research Project and the National Natural Science Foundation of China.