Transactions of the Korean Society of Machine Tool Engineers (한국공작기계학회논문집)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Creep Behaviours of Inconel 690 Alloy

인코넬 690 합금의 크리프거동

  • 황경충 ((주)은일 기술연구소) ;
  • 윤종호 (경일대학교 공과대학 기계공학부) ;
  • 최재하 (충북대학교 공과대학) ;
  • 김성청 (충북대학교 공과대학)
  • Published : 2002.08.01
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Abstract

Inconel 690 alloy has widely been used in power plant and high temperature facilities because it has high thermal resistance and toughness. But we have little design data about the creep behaviors of the alloy. Therefore, in this study, an apparatus has been designed and built for conducting creep tests under constant load conditions. A series of creep tests on Inconel 690 alloy have been performed to get the basic design data and life prediction of inconel products and we have gotten the following results. First, the stress exponents decrease as the test temperatures increase. Secondly, the creep activation energy gradually decreases as the stresses become bigger. thirdly, the constant of Larson-Miller Parameters on this alloy is estimated about 10. And last the fractographs at the creep rupture show both the ductile and the brittle fracture according to the creep conditions.

Keywords

References

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