Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Evaluations of Hydrogen Embrittlement Behaviours on Dissimilar Welding Part of SDS Bottles (II)

삼중수소 저장용기 이종용접부의 수소취화 거동 평가 (II)

  • Cho, Kyoungwon (Dept. of Advanced Materials Engineering, Chungbuk National Univ.) ;
  • Choi, Jaeha (Dept. of Advanced Materials Engineering, Chungbuk National Univ.) ;
  • Jang, Minhyuk (Dept. of Advanced Materials Science and Engineering, Korea National University of Transportation) ;
  • Lee, Youngsang (Dept. of Advanced Materials Science and Engineering, Korea National University of Transportation) ;
  • Hong, Taewhan (Dept. of Advanced Materials Science and Engineering, Korea National University of Transportation)
  • 조경원 (충북대학교 신소재 공학과) ;
  • 최재하 (충북대학교 신소재 공학과) ;
  • 장민혁 (한국교통대학교 신소재 공학과) ;
  • 이영상 (한국교통대학교 신소재 공학과) ;
  • 홍태환 (한국교통대학교 신소재 공학과)
  • Received : 2015.03.23
  • Accepted : 2015.04.30
  • Published : 2015.04.30
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Abstract

Recently, the ever-increasing use of fossil fuels for rapid industrial development and population significantly caused an environment pollution and global warming such as climate change. So research and development of sustainable and eco-friendly energy have been performed. Especially the interest in nuclear fusion fuel was significantly increased from the developed countries. The system of fusion energy production was tritium separation, storage and delivery, and purification. Republic of Korea is in charge of Storage and Delivery System (SDS) in the International Thermonuclear Experimental Reactor (ITER). Welding part of the SDS bottles for storing the tritium is known to be susceptible to hydrogen embrittlement. In this study, conducted a study for the relaxation of the stability and hydrogen embrittlement of the weld area. The hydrogen heat treatment was processed through the Pressure-Composition-Temperature (PCT) device according to the time variation. Also mechanical properties such as impact test and hardness test according to using the alkaline cleaning liquid for hydrogen embrittlement relief and the fracture was observed by scanning electron microscopy (SEM) after the mechanical properties evaluation.

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References

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