摘要
采用分子动力学结合团簇动力学研究了Hastelloy C276Ni基合金在Ar+辐照(室温,约10dpa)下的显微结构演化机理,开发了多尺度模拟程序Radieff,利用Radieff模拟了在Ar+辐照下C276中间隙位错环和孔洞的形核、长大过程。在武汉大学串列加速器-离子注入机-透射电镜一体化联机装置上开展了115keV Ar+辐照C276验证实验,采用一体化联机透射电镜观察了辐照缺陷尺寸及形貌。不同辐照剂量下位错环尺寸模拟结果与实验结果吻合很好。
The microstructure evolution induced by Ar^＋ irradiation （room temperature, about 10 dpa） in nickel based alloy Hastelloy C276 was studied using molecular dynamics and cluster dynamics, and a multiscale modeling code Radieff was constructed based on rate theory. The nucleation and growth of interstitial dislocation loops and void were studied by Radieff code. C276 was irradiated by 115 keV Ar^＋ at room temperature as validation experiment using transmission electron microscope （TEM）-implanter/accelerator interface facility at Wuhan University, and the microstructure evolution was observed by TEM. The size of dislocation loops simulated by Radieff is in good agreement with experiment.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2012年第2期129-132,共4页
Atomic Energy Science and Technology
基金
国家自然科学基金资助项目(10975194)
973计划资助项目(2011CB610503)
