Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지

Evaluation of Material Properties due to Thermal Embrittlement in CF8M Cast Austenitic Stainless Steel

CF8M 주조 오스테나이트 스테인리스강의 열취화에 따른 재료물성치 평가

  • 김철 (한국전력기술(주) 재료기술연구그룹) ;
  • 박흥배 (한국전력기술(주) 재료기술연구그룹) ;
  • 진태은 (한국전력기술(주) 재료기술연구그룹) ;
  • 정일석 (전력연구원 원자력연구실) ;
  • 석창성 (성균관대학교 기계공학부) ;
  • 박재실 (성균관대학교 기계공학부)
  • Published : 2003.04.23
Download PDF
⟨ Previous Next ⟩

Abstract

CF8M cast austenitic stainless steel is used for several components such as primary coolant piping, elbow, pump casing, and valve bodies in light water reactors. These components are subject to thermal aging at the reactor operating temperature. Thermal aging results in spinodal decomposition of the delta-ferrite leading to increased strength and decreased toughness. In this study, three kinds of the aged CF8M specimen were prepared using an artificially simulated aging method. The objective of this study is to summarize the method of estimating ferrite contents, Charpy impact energy and J-R curve, and to evaluate the thermal embrittlement of the CF8M cast austenitic stainless steel piping used in the domestic nuclear power plants.

Keywords