Investigation on Radiation Effects of Nanostructured Materials in Advanced Fusion Reactors

With the increasing potential of nuclear fusion technology as a clean energy solution, its engineering application faces the challenge of materials being used in extreme radiation scenarios Stability challenges in the environment. This article systematically investigates the use of Fe Cr based nanostructured materials in advanced nuclear fusion reactors for high-energy neutron irradiation The microstructure evolution and mechanical performance changes under the irradiation environment aim to reveal its radiation resistance mechanism and provide material selection for future fusion reactor candidates The development of materials provides theoretical and experimental support. By combining molecular dynamics (MD) simulations with ion beam irradiation experiments, Detailed analysis was conducted on the capture and annihilation effects of high interface density of nanomaterials on radiation-induced defects (point defects, bubbles, etc.). The results indicate that the interface region of the nanostructured material significantly enhances the defect adsorption ability and effectively suppresses the formation of defect clusters Gathered with helium bubbles, exhibiting excellent irradiation durability. In addition, experimental data shows that the hardness of nanomaterials after irradiation The decrease is less than 2%, the elastic modulus remains above 95%, and the elongation rate is maintained at about 7%, far superior to traditional coarse-grained materials. these The discovery not only validates the critical role of interface engineering in improving material irradiation stability and mechanical properties, but also provides insights for designing high-performance materials The structural materials of fusion reactors provide important insights. However, the interface stability and preparation process under long-term high-dose irradiation The controllability still needs further exploration. The results of this study aim to promote the use of nanostructured materials in future high-power density fusion reactors The application has laid the foundation