U_3Si_2Al弥散型燃料的辐照肿胀研究  

Study on the Irradiation Swelling of U_3Si_2-Al Dispersion Fuel

作　　者：邢忠虎[1] 应诗浩[1] 

机构地区：[1]中国核动力研究设计院核燃料及材料国家级重点实验室,四川成都610041

出　　处：《原子能科学技术》2001年第1期15-19,共5页Atomic Energy Science and Technology

摘　　要：介绍了U3Si2 Al弥散型燃料的辐照肿胀机理。将弥散型燃料的芯体视为连续基体中的微型燃料元件 ,应用裂变气体的行为机理描述燃料相中的气泡形成过程。研究结果表明 :燃料相的肿胀引起燃料颗粒和金属基体之间的力学相互作用 ,金属基体能抑制燃料颗粒的辐照肿胀。在一定辐照条件下 。The dominant modeling mechanisms on irradiation swelling of U3Si2-Al dispersion fuel are introduced. The core of dispersion fuel is considered as micro-fuel elements of continuous matrix. The formation processes of gas bubbles in the fuel phase are described through the behavior mechanisms of fission gases. The swelling in the fuel phase causes the interaction between fuel particles and metal matrix, and the metal matrix can restrain the irradiation swelling of fuel particles. The developed code can predict irradiation-swelling values according to the parameters of fuel elements and irradiation conditions, and the predicted values are in agreement with the measured results.

关 键 词：亚晶化 界面反应 蠕变 弥散型燃料 核燃料 辐射肿胀 硅化铀 铝 

分 类 号：TL352.25[核科学技术—核技术及应用] TL271.91