论文标题
在Fe-Ti-Y-O系统中，氦气泡成核的动力学蒙特卡洛模型
Kinetic Monte Carlo modelling of Helium Bubble Nucleation onto Oxides in the Fe-Ti-Y-O System
论文作者
论文摘要
创建了动力学的蒙特卡洛（KMC）模型，以模拟中子辐照下的插入他的原子到纳米结构的铁质合金（NFAS）中的插入。他的原子通过NFA迁移，直到被其他原子和因照射产生的空缺而陷入困境。发现NFA中的Y-Ti-O纳米氧化物在捕获这些原子并防止在晶界形成气泡并似乎在其他实验中观察到的特性（大小和数量密度）有效。发现气泡更喜欢氧化物界面作为成核位点，并且稳定气泡的HE/VAC比在1.3至1.8 He/vac之间。 HE气泡对溶质对晶界的隔离或纳米氧化物的稳定性的影响可以忽略不计。
A Kinetic Monte Carlo (KMC) model was created to simulate the insertion of transmutation He atoms into nanostructured ferritic alloys (NFAs) under neutron irradiation. Interstitial He atoms migrate through the NFA until becoming trapped in bubbles of other He atoms and vacancies created from irradiation. The Y-Ti-O nano-oxides in the NFAs were found to be effective in capturing these He atoms and preventing bubbles from forming at the grain boundary and appear to replicate the characteristics (size and number density) observed in other experiments. The bubbles were found to prefer the <111> oxide interface as a nucleation site and the stable bubbles have a He/Vac ratio between 1.3 and 1.8 He/Vac. The influence of He bubbles on the segregation of solutes to the grain boundaries or on the stability of the nano-oxides were negligible.
