Summary
The factors affecting the choice of materials for large discs in highly rated land-based gas turbines are reviewed. It is concluded that NIMONIC alloy 901, a Ni-Fe-Cr base alloy, is suitable to replace the traditional steels. Problems in producing large discs in this type of alloy are discussed and the production route used to produce a 1 metre diameter disc described. The structure and mechanical properties of this disc demonstrate the practicability of producing large NIMONIC alloy 901 discs without detrimental effects compared to the well documented behaviour of much smaller aero-engine forgings. The higher temperature and strength capability of such large discs allows increased efficiency and economy in land-based gas turbines.
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References
SIMS C.T., “High Temperature Alloys in High Technology Systems,” Proc. Conf. on High Temperature Alloys for Gas Turbines, Liege, 1978, p. 13. Ed. Coutsourdadis D. et al.
HOLDSWORTH S.R., “The Significance of Defects in Gas Turbine Disc Alloys,” Final Report COST 50 2UK22, 1982.
To be published, Proc. Conf. on High Temperature Alloys for Gas Turbines and Other Applications, Liege, October 1986.
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© 1987 ECSC, EEC, EAEC, Brussels and Luxembourg
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Elliott, I.C., Williams, P.M. (1987). The Production and Properties of Large NIMONIC* Alloy 901 Discs for Land-Based Gas Turbines. In: Marriott, J.B., Merz, M., Nihoul, J., Ward, J. (eds) High Temperature Alloys. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1347-9_22
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DOI: https://doi.org/10.1007/978-94-009-1347-9_22
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7099-7
Online ISBN: 978-94-009-1347-9
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