Microstructural Evolution of the [001] Oriented Single Crystal Superalloy DD6 Creep at 760°C and 785 MPa

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The creep and microstructures of DD6 single crystal superalloy with [001] orientation at 760°C and 785MPa were investigated. The results show that large a/2 dislocations are spread and concentrated in matrix channels during incubation period, and few of stacking faults are observed at later stage of incubation period. The stage of primary creep is characterized by the stacking faults shearing γ' phases, and the density of a/2 dislocations in the matrix continues to increase. The density of the stacking faults increases during the stages of secondary and tertiary creep.

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Periodical:

Advanced Materials Research (Volumes 535-537)

Edited by:

Chunxiang Cui, Yali Li and Zhihao Yuan

Pages:

888-893

Citation:

J. Yu et al., "Microstructural Evolution of the [001] Oriented Single Crystal Superalloy DD6 Creep at 760°C and 785 MPa", Advanced Materials Research, Vols. 535-537, pp. 888-893, 2012

Online since:

June 2012

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$38.00

[1] C.T. Sims, N.S. Stoloff and W.C. Hagel: Superalloy(Ⅱ) (John Wiley & Sons, Inc., New York, 1987).

[2] W. Betteridge, S.W.K. Shaw: Mater. Sci. Technol. Vol. 3 (1987), p.682.

[3] R.C. Reed: Superalloys: fundamentals and applications (Cambridge University Press, Cambridge, 2006).

[4] F. Diologent, P. Caron: Mater. Sci. Eng. A Vol 385 (2004), p.245.

[5] J.R. Li, Z.G. Zhong, D.Z. Tang, S.Z. Liu, P. Wei, P.Y. Wei, Z.T. Wu, D. Huang and M. Han, in: Superalloys 2000, edtied by T.M. Pollock, R.D. Kissinger, R.R. Bowman, K.A. Green, M. McLean, S. Olson, J.J. Schina, The Minerals, Metals and Materials Society, PA, (2000).

[6] J.R. Li, J.Q. Zhao, S.Z. Liu and M. Han, in: Superalloys 2008, edtied by R.C. Reed, K.A. Green, P. Caron, T.P. Grab, M.G. Fahrmann, E.S. Huron, S.A. Woodard, The Minerals, Metals and Materials Society, PA, (2008), p.443.

[7] Z.X. Shi, J.R. Li, S.Z. Liu, Y.S. Luo and J.Q. Zhao: Rare Metal Mater. Eng. Vol. 39 (2010), p.1334.

[8] T.M. Pollock, A.S. Argon: Acta Metall. Mater., Vol. 40 (1992), p.1.

[9] V. Sass, M. Feller-Kniepmeier: Mater. Sci. Eng. A, Vol. 245 (1998), p.19.

[10] M. Feller-Kniepmeier, T. Link: Metall. Trans. A, Vol. 20A (1989), p.1233.

[11] M. Feller-Kniepmeier, T. Link, Mater. Sci. Eng. A, Vol. 113 (1989), p.191.

[12] G.L. Drew, R.C. Reed, K. Kakehi and C.M.F. Rae, in: Superalloys 2004, edtied by K.A. Green, T.M. Pollock, H. Harada, T.E. Howson, R.C. Reed, J.J. Schirra, S. Walston , The Minerals, Metals and Materials Society , PA, ( 2004), p.127.

[13] Q.Z. Chen, D.M. Knowles: Mater. Sci. Eng. A, Vol. 356 (2003), p.352.

[14] C. Rae, M. Rist, D. Cox, R. Reed and N. Matan: Metall. Mater. Trans. A Vol. 31 (2000), p.2219.

[15] C.M.F. Rae, N. Matan and R.C. Reed: Mater. Sci. Eng. A Vol. 300 (2001), p.125.

[16] C.M.F. Rae, R.C. Reed: Acta Mater. Vol. 55 (2007), p.1067.

[17] N. Matan, D.C. Cox, P. Carter, M.A. Rist, C.M.F. Rae and R.C. Reed: Acta Mater. Vol. 47 (1999), p.1549.

[18] G.R. Leverant, B.H. Kear: Metall. Trans. Vol. 1 (1970), p.491.

[19] R.A. MacKay, R.D. Maier: Metall. Trans. A Vol. 13A (1982), p.1747.

[20] P. Caron, Y. Ohta, Y.G. Nakagawa and T. Kahn, in: Superalloys 1988, edtied by S. Reichman, D.N. Duhl, G. Maurer, S. Antolovich, C. Lund, The Metallurgical Society of AIME, PA, (1988), p.215.