论文标题
中子辐照的ZR-NB合金中的位错环生长和辐射生长：速率理论建模
Dislocation loops growth and radiation growth in neutron irradiated Zr-Nb alloys: rate theory modelling
论文作者
论文摘要
提出了一种研究辐照二进制ZR合金中研究位错环生长的广义模型。它考虑了温度效应，循环的效率以吸收点缺陷，取决于循环尺寸，晶界水槽强度的局部性以及合金元素的浓度的影响。该模型用于描述在反应堆条件下中子照射下锆氮化合金合金中环半径生长的动力学。研究环半径和菌株的生长在不同的晶粒尺寸，晶界的位置以及浓度的niobium。结果表明，晶界下沉的位置导致晶粒内部晶体的不均匀变形。此外，将niobium作为合金元件的引入减少了环半径，但促进了晶粒内部局部菌株的生长。
A generalized model to study dislocation loops growth in irradiated binary Zr-based alloys is presented. It takes into account temperature effects, efficiencies of loops to absorb point defects dependent on the loop size, an influence of locality of grain boundary sink strength, and concentration of the alloying element. This model is used to describe the dynamics of loop radii growth in zirconium-niobium alloys under neutron irradiation at reactor conditions. A growth of both loop radii and strains is studied at different grain sizes, location from grain boundaries, and concentration of niobium. It is shown that locality of grain boundary sinks results in a non-uniform deformation of the crystal inside the grains. Additionally, an introduction of niobium as an alloying element decreases the loop radii but promotes the growth of local strains inside the grains.
