中国科学院大学学报2024，Vol.41Issue(4)：452-460,9.DOI:10.7523/j.ucas.2022.087
单晶钨辐照损伤的分子动力学研究
Molecular dynamics study on irradiation damage of single crystal tungsten
摘要
Abstract
Tungsten has been considered the most suitable plasma facing material in magnetic confinement fusion devices due to its excellent physical and chemical properties.However,studies on the defect evolution of tungsten metal under high-energy neutron irradiation are still insufficient.In this paper,the evolution of radiation damage in single crystal tungsten was simulated by using molecular dynamics method.The effects of incident energy,load,and impurity atoms on the evolution of radiation damage,as well as the effects of radiation defects on the mechanical properties of single crystal tungsten were investigated.The results show that the retention of carbon and hydrogen in the tungsten lattice increases the irradiation defects to some extent,with the effect of carbon being more significant than that of hydrogen.Compressive load has a certain inhibitory effect on irradiation defects,while tensile load has the opposite effect.Frenkel defects caused by irradiation can promote the emission of dislocations and hinder the movement of dislocations.关键词
分子动力学/粒子辐照/金属钨/面向等离子体材料Key words
molecular dynamics/particle irradiation/tungsten/plasma facing material(PFM)分类
数理科学引用本文复制引用
刘松畅,余新刚..单晶钨辐照损伤的分子动力学研究[J].中国科学院大学学报,2024,41(4):452-460,9.基金项目
国家自然科学基金(12172356)、国家重点研发计划(2017YFE0301302)和中央高校基本科研业务费专项资助 （12172356）
