Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Environmental fatigue correction factor model for domestic nuclear-grade low-alloy steel

  • Gao, Jun (CAS Key Laboratory of Nuclear Materials and Safety Assessment, Liaoning Key Laboratory for Safety and Assessment Technique of Nuclear Materials, Institute of Metal Research, Chinese Academy of Sciences) ;
  • Liu, Chang (Shanghai Nuclear Engineering Research and Design Institute) ;
  • Tan, Jibo (CAS Key Laboratory of Nuclear Materials and Safety Assessment, Liaoning Key Laboratory for Safety and Assessment Technique of Nuclear Materials, Institute of Metal Research, Chinese Academy of Sciences) ;
  • Zhang, Ziyu (CAS Key Laboratory of Nuclear Materials and Safety Assessment, Liaoning Key Laboratory for Safety and Assessment Technique of Nuclear Materials, Institute of Metal Research, Chinese Academy of Sciences) ;
  • Wu, Xinqiang (CAS Key Laboratory of Nuclear Materials and Safety Assessment, Liaoning Key Laboratory for Safety and Assessment Technique of Nuclear Materials, Institute of Metal Research, Chinese Academy of Sciences) ;
  • Han, En-Hou (CAS Key Laboratory of Nuclear Materials and Safety Assessment, Liaoning Key Laboratory for Safety and Assessment Technique of Nuclear Materials, Institute of Metal Research, Chinese Academy of Sciences) ;
  • Shen, Rui (Shanghai Nuclear Engineering Research and Design Institute) ;
  • Wang, Bingxi (Shanghai Nuclear Engineering Research and Design Institute) ;
  • Ke, Wei (CAS Key Laboratory of Nuclear Materials and Safety Assessment, Liaoning Key Laboratory for Safety and Assessment Technique of Nuclear Materials, Institute of Metal Research, Chinese Academy of Sciences)
  • Received : 2020.09.04
  • Accepted : 2021.02.13
  • Published : 2021.08.25
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Abstract

Low cycle fatigue behaviors of SA508-3 low-alloy steel were investigated in room-temperature air, high-temperature air and in light water reactor (LWR) water environments. The fatigue mean curve and design curve for the low-alloy steel are developed based on the fatigue data in room-temperature and high-temperature air. The environmental fatigue model for low-alloy steel is developed by the environmental fatigue correction factor (Fen) methodology based on the fatigue data in LWR water environments with the consideration of effects of strain rate, temperature, and dissolved oxygen concentration on the fatigue life.

Keywords

Acknowledgement

This study was jointly supported by the National Science and Technology Major Project (2017ZX06002003-004-002), the Key Programs of the Chinese Academy of Sciences (Research on the Development of Nuclear Power Materials and Service Security Technology, ZDRW-CN-2017-1), the National Natural Science Foundation of China (51601201 & 51671201), and the Innovation Fund of Institute of Metal Research, Chinese Academy of Sciences (SCJJ-2013-ZD-02).

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