대한기계학회논문집A (Transactions of the Korean Society of Mechanical Engineers A)

  • 제22권1호
  • /
  • Pages.44-51
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  • 1998
  • /
  • 1226-4873(pISSN)
  • /
  • 2288-5226(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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열화평가에 전기화학적 방법의 응용에 관한 연구

A study on the application of electrochemical method for degradation evaluation

  • 권재도 (영남대학교 기계공학부) ;
  • 문윤배 (영남대학교 대학원 기계공학과) ;
  • 김상태 (영남대학교 기계공학부)
  • Kwon, Jae-Do (Dept.of Mechanical Engineering, Yeungnam University) ;
  • Moon, Yun-Bae (Dept.of Mechanical Engineering, Graduate School of Yeungnam University) ;
  • Kim, Sang-Tae (Dept.of Mechanical Engineering, Yeungnam University)
  • 발행 : 1998.01.01
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초록

In order to develop the evaluation methods of degradation for the Ni-Cr-Mo-V steel, which is in use for turbine rotor in nuclear power plant, the degraded materials were prepared by simulated degradation methods. The result of impact test and fatigue crack growth test shows that the FATT(Fracture Appearance Transition Temperature) and fatigue crack growth rate increased with the increase of degradation. And the result of new electrochemical polarization test method was suggested for the evaluating FATT, fatigue crack growth exponent and coefficient C values based on the results of relationship between corrosion current density(Icorr) & FATT, and the m & C and Icorr.

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