公开(公告)号：US20230335304A1

公开(公告)日：2023-10-19

申请号：US17850238

申请日：2022-06-27

申请人： Xi' an Jiaotong University

发明人： Di Yun ,  Zhaohao Wang ,  Chunyang Wen ,  Tiantian Shi ,  Linna Feng ,  Wenbo Liu ,  Jianqiang Shan

IPC分类号： G21C3/18 ,  G21C1/02 ,  G21C21/02

CPC分类号： G21C3/18 ,  G21C1/02 ,  G21C21/02

摘要： The invention belongs to the technical field of nuclear reactor materials design, and discloses a method for improving the withstanding capability of the cladding material in the fast neutron irradiation environment, comprising the following steps: selecting the cladding material with the annular structure and placing it on the outer side of the metallic fuel slug, with leaving a 0.2-0.8 mm gap between the metallic fuel slug and the cladding material; processing the operation in a reactor subsequently, with an annealing process of the fast neutron reactor fuel during the operation of the reactor; improves the withstanding capability of the cladding material in the fast neutron irradiation environment. The invention processes annealing treatment of the cladding material by balancing the internal and external stresses, multiple cycles of steady-state and transient operations, enhancing the withstanding capability of the steel in the high neutron irradiation environment, improving the lifetime of the cladding material.