• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Nuclear Materials: Materials Aspects of Fission and Fusion >FORMATION OF THE RIM STRUCTURE IN HIGH BURNUP FUEL
【24h】

FORMATION OF THE RIM STRUCTURE IN HIGH BURNUP FUEL

机译：高松散度燃料中RIM结构的形成

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The process of grain subdivision or polygonization in UO2 was studied by using ion irradiation techniques and by investigating the rim structure in high burnup UO2 fuel. Ion irradiation with fission product ions caused first the formation of subgrain boundaries, observed in high resolution transmission electron microscopy, HRTEM. At higher doses, polygonization was completed at a well defined threshold. High burnup UO2 fuel showing well developed rim zones was investigated in optical, scanning and transmission electron microscopy. The oxygen potential Delta<(G)over bar(O-2), the hardness H and the fracture toughness K-Ic of the restructured material and the radial dependence of porosity, grain subdivision, H and K-Ic were measured. K-Ic was found to change at smaller radial positions than the other properties, indicating a nucleation process not affecting all properties to the same extent. The emerging picture for the formation of the rim structure in UO2 is discussed. (C) 1997 Elsevier Science B.V. [References: 42]
机译：利用离子辐照技术，通过研究高燃耗UO2燃料的边缘结构，研究了UO2中的晶粒细分或多角化过程。在高分辨率透射电子显微镜HRTEM中观察到，用裂变产物离子进行的离子辐照首先引起亚晶界的形成。在较高剂量下，多边形化在明确定义的阈值下完成。在光学，扫描和透射电子显微镜下研究了高燃耗的UO2燃料，显示出边缘区域发达。测量氧势Delta <（G）超过bar（O-2），硬度H和重组材料的断裂韧性K-Ic，以及孔隙率，晶粒细分，H和K-Ic的径向依赖性。发现K-Ic在比其他性质小的径向位置处改变，表明成核过程没有在相同程度上影响所有性质。讨论了在UO2中形成轮辋结构的新情况。 （C）1997 Elsevier Science B.V. [参考：42]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号