U_3Si_2-Al弥散型燃料板制备工艺对力学性能的影响  

Effects of Process Techniques Used in Preparation of U_3Si_2-Al Dispersed Fuel Plates on Mechanical Properties

作　　者：王习术[1] 朱随群[1] 徐勇[2] 

机构地区：[1]清华大学工程力学系,北京100084 [2]清华大学核能技术设计研究院,北京100084

出　　处：《核动力工程》2003年第2期137-141,共5页Nuclear Power Engineering

基　　金：获同济大学固体力学教育部重点实验室高访学者基金; 清华大学校基金(JC2000057)的资助

摘　　要：U3Si2-Al弥散型燃料板元件是一种新型低浓化的研究堆燃料。该元件制备工艺复杂,使用环境特殊,加工环节对弥散型燃料板力学性能影响较大,而弥散型燃料板的力学性能优劣是保证研究堆可靠使用的必要条件。本文针对现有的U3Si2-Al弥散型燃料板元件在不同热处理时的纵横力学性能进行了测试和分析研究。结果表明,弥散型复合燃料板芯体中的铀含量越高,燃料板的强度越低,现有退火工艺对燃料板的影响极大。由此,本文提出了改善燃料板力学性能参数的热处理方法的建议。As one kind of newly developed lower concentration dispersed fuels adopted in research reactors, the U3Si2-Al results from a complicated procedure of production and serves in a special environment. Its mechanical properties, which mainly depend upon the process techniques, are of great significance and essential for the reliability and performance in research reactors. Therefore, effects of the process techniques on the mechanical properties of U3Si2-Al fuel plates were investigated experimentally. The results show that with the increasing of the uranium content, the tensile strength of U3Si2-Al fuel plate decreases. In addition, there is an obvious effect of current annealing process on the mechanical properties of fuel plate. A heat-treatment method that can obtain superior mechanical properties is proposed.

关 键 词：U3Si2-Al燃料板 芯体 包壳 热处理法 力学特性 

分 类 号：O346.1[理学—固体力学] TB301[理学—力学]