Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Low cycle fatigue properties of hydrogenated welding sheets of Zr-Sn-Nb alloy using funnel-shaped flat specimens

  • Lian-feng, Wei (Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China) ;
  • Chen, Bao (School of Mechanics and Engineering, Southwest Jiaotong University) ;
  • Shi-zhong, Wang (Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China) ;
  • Yong, Zheng (Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China) ;
  • Meng-bin, Zhou (Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China)
  • Received : 2019.10.27
  • Accepted : 2020.01.12
  • Published : 2020.08.25
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Abstract

Low cycle fatigue tests on the hydrogenated welding seam of Zr-Sn-Nb alloy at room temperature and 360 ℃ had been carried out by using the funnel-shaped flat specimens. The relationships between nominal stress & strain directly measured across the funnel and local stress & strain at the root of the funnel are given by considering cyclic plasticity correction. The results show that the fatigue resistance of welding seam at room temperature is only slightly better than that at 360 ℃. Probabilistic fatigue life curves are obtained by using a two-parameter power function.

Keywords

References

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