Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Investigation of Wear Mechanisms of Tube Materials for Nuclear Steam Generators due to Stick-Slip Behavior under Fretting Conditions

프레팅 조건하에 있는 증기 발생기 세관재의 스틱-슬립 영역별 마멸 메커니즘 규명

  • Lee Young-Ze (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Jeong Sung-Hoon (Graduate School of Mechanical Engineering, Sungkyunkwan University) ;
  • Park Chi-Yong (Nuclear Power Laboratory, Korea Electric Power Research Institute)
  • 이영제 (성균관대학교 기계공학부) ;
  • 정성훈 (성균관대학교 대학원 기계공학부) ;
  • 박치용 (전력연구원 원자력연구실)
  • Published : 2005.02.01
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Abstract

Fretting is the oscillatory motion with very small amplitudes, which usually occurs between two solid surfaces in contact. Fretting wear is the removal of material from contacting surfaces through fretting action. Fretting wear of steam generator tubes in nuclear power plant becomes a serious problem in recent years. The materials for the tubes usually are Inconel 690 (I-690) and Inconel 600 (I-600). In this paper, fretting wear tests for I-690 and I-600 were performed under various applied loads in water at room temperature. Results showed that the fretting wear loss of I-690 and I-600 tubes was largely influenced by stick-slip. The fretting wear mechanisms were the abrasive wear in slip regime and the delamination wear in stick regime. Also, I-690 had somewhat better wear resistance than I-600.

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References

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