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A diffraction study of the γ″ phase in INCONEL 718 superalloy

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Abstract

The crystal structure and morphology of the γ″ phase in INCONEL 718 (IN-718) superalloy was studied by using theoretical prediction, transmission electron microscopy, and computer simulation. The experimental results show that (1) The γ″ phase has an ordered body-centered-tetragonal structure with lattice parameters a γ″=bγ″≌aγ and c γ″≌2aγ and is coherent with the matrix (γ); (2) the γ″ phase in IN-718 alloy forms as thin ellipsoidal discs on the {100} matrix planes with the c-axis being perpendicular to the discs; and (3) the orientation relationship between the γ″ phase and the matrix is (100)γ″//(100)γ;[010]γ″//[010]γ.

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References

  1. H.L. Eiselstein: ASTM STP 369, ASTM, Philadelphia, PA, 1965, pp. 65–79.

    Google Scholar 

  2. R. Cozar and A. Pineau: Metall. Trans., 1973, vol. 4, pp. 47–59.

    CAS  Google Scholar 

  3. J.M. Oblak, D.F. Paulonis, and D.S. Duvall: Metall. Trans., 1974, vol. 5, pp. 143–53.

    CAS  Google Scholar 

  4. J.F. Barker, D.D. Krueger, and D.R. Chang: in Advanced High-Temperature Alloys: Processing and Properties, S.M. Allen, R.M. Pelloux, and R. Widmer, eds., 1986, Nicholas J. Grant Symposium, Massachusetts Institute of Technology, MA, pp. 125–37.

    Google Scholar 

  5. E.E. Brown and D.R. Muzyka: in Superalloys II, C.T. Sims, N.S. Stoloff, and W.C. Hagel, eds., John Wiley & Sons, Inc. USA, 1987, pp. 165–88.

    Google Scholar 

  6. E.I. Raymond: Trans. AIME, 1967, vol. 239, pp. 1415–22.

    CAS  Google Scholar 

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Authors and Affiliations

  1. Aero Materials Department, Aeronautical Systems Research Division, Taichung, Taiwan, Republic of China

    S. J. Hong (Scientific Officer), W. P. Chen (Scientific Officer) & T. W. Wang (Scientific Officer)

Authors
  1. S. J. Hong
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  2. W. P. Chen
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  3. T. W. Wang
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Hong, S.J., Chen, W.P. & Wang, T.W. A diffraction study of the γ″ phase in INCONEL 718 superalloy. Metall Mater Trans A 32, 1887–1901 (2001). https://doi.org/10.1007/s11661-001-0002-4

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  • DOI: https://doi.org/10.1007/s11661-001-0002-4

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