Determination of the Factors Controlling Crystallography Non-Conformance in Single Crystal Turbine Blade Production on an Industrial Scale


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The arduous conditions to which hot section turbine components are subjected in service, dictate the superior physical and mechanical properties demanded of them. The demand for both high temperature and creep resistance, and anisotropic property requirements of the components has lead to developments in alloy composition, component geometry and single, oriented grain structure design. The slim tolerances and high quality standards imposed on such design features, combined with the high production volume in industry means that component non-conformances to the customer specifications occur. The input variables contributing to crystallography non-conformance in single crystal production have been investigated with a view to defining optimum process parameters for the successful manufacture of single crystal investment cast components on an industrial scale.



Materials Science Forum (Volumes 558-559)

Edited by:

S.-J.L. Kang, M.Y. Huh, N.M. Hwang, H. Homma, K. Ushioda and Y. Ikuhara




J. Cameron and P.W. Shelton, "Determination of the Factors Controlling Crystallography Non-Conformance in Single Crystal Turbine Blade Production on an Industrial Scale", Materials Science Forum, Vols. 558-559, pp. 695-700, 2007

Online since:

October 2007




[1] Private communication with Dr. D.A. Ford.

[2] A. Wagner, PhD Thesis, 2002, Imperial College, London.

[3] R. Völkl, U. Glatzel and M. Feller-Kniepmeier, Acta Metallurgica, Vol 46, No. 12, pp.4395-4404, (1998).

[4] C.T. Sims, N.S. Stoloff and W.C. Hagel, Superalloys II High Temperature Materials for Aerospace and Industrial Power, Wiley Interscience Publication, New York, (1987).

[5] M. Durand-Charre, The Microstructures of Superalloys, Gordon & Breach Science Publishers, Amsterdam, (1997).

[6] M. McLean, Directionally Solidified Materials for High Temperature Service, The Metals Society, Bristol, UK, (1983).

[7] TRW/DSSG/QUEST, 1980, pp.58-69.

[8] P. Carter, D.C. Cox, C.A. Gandin and R.C. Reed, Materials Science & Engineering A, Vol 280, pp.233-246, (2000).

[9] M.H. Burden and J.D. Hunt, Crystal Growth, 1974, Vol 22, p.109.

[10] B.D. Cullity, Elements of X-Ray Diffraction, 2nd Ed, Addison-Wesley Publishing Company Inc., USA, (1978).

[11] P.R. Beeley and R.F. Smart, Investment Casting, Institute of Materials, London, (1995).

[12] B. Paine, AETC Ltd., Paper No. 17, p.17. 1-17. 8.