J Mater Sci Technol ›› 1994, Vol. 10 ›› Issue (4): 293-303.

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γ″Precipitate in Inconel 718

Jianhong HE (Dept. of Mater. Sci. and Eng., Tsinghua University, Beijing, 100084, China)S.Fukuyama and K. Yokogawa (Chugoku National Industrial Research Institute, Hiro-suehiro 2-2-2, Kure, Hiroshima, 737-01, Japan (To whom correspondence should be addres   

  • Received:1994-07-28 Revised:1994-07-28 Online:1994-07-28 Published:2009-10-10

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Abstract: The γ"precipitate in Inconel 718 Ni-base superalloy has been investigated using TEM. Based on a calculation of diffraction pattern. the orientation relations between precipitates and matrix are given in detail. The influence of solution temperature on growth of γ" precipitates was investigated. and a γ" precipitate free area near δ phase was found. The coarsening behaviour of γ" precipitates during short time aging is discussed

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