基于有序界面势能沟道的ODS钢抗辐照肿胀机理研究 Mechanism Study on Radiation Swelling Resistance of ODS Steel Based on Ordered Interface Potential Channels

针对第四代核反应堆燃料包壳材料在高能中子辐照下易发生体积肿胀的难题,本文提出了一种基于太极统一场论(TUFT)的有序场调控策略。传统氧化物弥散强化(ODS)钢依赖随机分布的氧化物颗粒被动捕获缺陷,效率受限。本研究通过构建沿晶界精准排布的有序氧化物阵列,利用周期性应力场叠加形成“势能沟道”,实现了缺陷从“无序扩散”向“定向导流”的转变。分子动力学模拟结果显示,在600 K辐照环境下,有序结构使点缺陷复合率提升33.3%,空洞形核孕育期延长2.3倍。研究证实,通过调控阴阳场平衡(K ≈ -1),可实现材料从“被动防御”到“主动免疫”的范式升级。

Addressing the challenge of volumetric swelling in Gen-IV nuclear reactor fuel cladding under high-energy neutron irradiation, this study proposes an ordered field regulation strategy based on the Taiji Unified Field Theory (TUFT). Traditional Oxide Dispersion Strengthened (ODS) steels rely on randomly distributed oxide particles for passive defect capture, which limits efficiency. By constructing an ordered oxide array precisely arranged along grain boundaries, periodic stress field superposition forms "potential channels," enabling a transition of defects from "disordered diffusion" to "directional diversion." Molecular dynamics simulations reveal that the ordered structure enhances point defect recombination rates by 33.3% and extends the incubation period for void nucleation by 2.3 times under 600 K irradiation. The research confirms that regulating the Yang-Yin field balance (K ≈ -1) upgrades material performance from "passive defense" to "active immunity."