• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2019, Vol. 55 ›› Issue (16): 85-90.doi: 10.3901/JME.2019.16.085

• 材料科学与工程 • 上一篇    下一篇

含轴向对称裂纹锆合金包壳管断裂行为

刘肖1, 王理1, 包陈2, 王恺晴1, 赵宇翔1, 王浩1, 徐祺1   

  1. 1. 中国核动力研究设计院反应堆燃料及材料重点实验室 成都 610213;
    2. 西南交通大学力学与工程学院 成都 610031
  • 收稿日期:2018-10-17 修回日期:2019-05-15 出版日期:2019-08-20 发布日期:2019-08-20
  • 通讯作者: 刘肖(通信作者),女,1989年出生,助理研究员。主要研究方向为反应堆结构材料。E-mail:18280008908@126.com
  • 作者简介:王理,女,1969年出生,研究员,博士研究生导师。主要研究方向为反应堆结构/功能材料。E-mail:932163795@qq.com

Fracture Behaviour of Zirconium Alloy Cladding Tubes Containing Axial Symmetric Cracks

LIU Xiao1, WANG Li1, BAO Chen2, WANG Kaiqing1, ZHAO Yuxiang1, WANG Hao1, XU Qi1   

  1. 1. Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu 610213;
    2. School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031
  • Received:2018-10-17 Revised:2019-05-15 Online:2019-08-20 Published:2019-08-20

摘要: 作为装载核燃料的密封外壳,锆合金包壳管的断裂性能对于反应堆的安全运行至关重要。基于弹塑性有限元分析建立了TFAC试样的断裂韧度测试方法,完成不同氢含量锆合金TFAC试样的断裂韧性试验。研究结果表明,锆合金包壳管具有优良的抗裂性能,氢含量低于200 mg/kg时,其对包壳管断裂韧度的影响较小;当氢含量达到290 mg/kg时,包壳管的断裂韧度显著提高。研究可为锆合金包壳管在服役过程中的安全性评估提供数据支撑。

关键词: TFAC试样, 断裂韧度, 锆合金包壳管, 氢含量, 有限元分析

Abstract: As the sealing shell of nuclear reactor fuels, the fracture property of Zirconium alloy cladding tubes are of great importance to safe operation of reactor. The method of fracture toughness testing for TFAC specimen is established based on the elastic-plastic finite element analysis. Fracture toughness testing on the TFAC specimens of Zirconium alloy with different concentration of Hydrogen is carried out. The results show that Zirconium alloy cladding tubes have good properties against fracture. Little influence of the concentration of Hydrogen on the fracture toughness of the cladding tubes is observed when the concentration of hydrogen is lower than 200 mg/kg, but the fracture toughness increases remarkably when the concentration of hydrogen reaches to 290 mg/kg. The research results can offer data support for the safety evaluation of Zirconium alloy cladding tubes during operation.

Key words: concentration of hydrogen, finite element analysis, fracture toughness, TFAC specimen, zirconium alloy cladding tubes

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