Transactions of the Korean Society of Pressure Vessels and Piping (한국압력기기공학회 논문집)

Korean Society of Pressure Vessels and Piping (한국압력기기공학회)
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Environmental Fatigue Behaviors of Austenitic Stainless Steels in the Primary Water Environment of Nuclear Power Plants

원전일차측 환경에서 오스테나이트계 스테인리스강의 환경피로특성

  • 이현배 (KAIST 원자력 및 양자공학과) ;
  • 김호섭 (KAIST 원자력 및 양자공학과) ;
  • 김태순 (한국수력원자력 중앙연구원) ;
  • 장창희 (KAIST 원자력 및 양자공학과)
  • Received : 2017.12.16
  • Accepted : 2017.12.27
  • Published : 2017.12.30
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Abstract

Austenitic Stainless Steels (ASSs) are widely used as structural materials in the pressurized water reactors (PWRs) because of their superior mechanical properties and corrosion resistance. However, it is well known that ASSs are susceptible to the environmental assisted cracking (EAC) such as environmental assisted fatigue (EAF) during the long term operation. There have been extensive tests and researches to understand the extent and the mechanisms of environmental effects. In this paper, the world-wide EAF test results of ASSs are introduced including those of Korean test programs. The suggested EAF mechanisms of ASSs are also discussed. Finally, the areas of further research to resolve the issue of EAF are suggested.

Keywords

References

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