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Cast alloys for gas turbine vanes

  • Heat Resistant Steels and Alloys
  • Published:
Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    The investigation of the casting properties and manufacture of turbine vanes showed that it is possible to use investment casting for gas turbine vanes of the experimental alloys tested.

  2. 2.

    In alloys hardened with aluminum and titanium (alloys 1 and 2) the maximum short-term strength was retained to higher temperatures than for the alloys hardened with aluminum and niobium (alloy 3) or niobium alone (alloy 4).

  3. 3.

    All the alloys investigated had stable properties at 700–900°. More notable weakening of the alloys began at 900–950°.

  4. 4.

    For long-term operation the heat resistance is highest for alloys with aluminum and titanium as the main hardening elements (alloys 1 and 2), and lower for alloys hardened with aluminum and niobium (alloy 3) as compared with alloys in which the precipitation-hardening element is niobium alone (alloy 4).

  5. 5.

    Alloys 1 and 2 can be recommended for manufacturing, guide vanes operating at temperatures up to 950°, and alloys 3 and 4 for temperatures up to 850–900°.

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Literature cited

  1. V. Ya. Bilyk, Casting Properties of Heat-Resisting Alloys, Report No. 224, Leningrad Polytechnical Institute [in Russian] (1963).

  2. Yu. A. Nekhendzi et al., Zavod. Lab. No. 1 (1955).

  3. Yu. A. Nekhendzi et al., Liteinoe Proizvodstvo, No. 7 (1966).

  4. E. E. Levin and E. N. Masaleva, Investigation of Materials for Power Plants, Report No. 69 [in Russian], TsKTI, Leningrad (1966).

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  5. E. N. Masaleva et al., Working Capacity of Structural Materials for Power Plants, Report No. 84 [in Russian], TsKTI, Leningrad (1968).

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  6. H. Hughes, J. Iron Steel Inst., No. 7 (1967).

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Authors
  1. M. N. Efimova
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  2. E. N. Masaleva
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Additional information

Leningrad Polytechnical Institute. Translated from Metallovedenie 1 Termicheskaya Obrabotka Metallov, No. 2, pp. 46–50, February, 1971.

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Efimova, M.N., Masaleva, E.N. Cast alloys for gas turbine vanes. Met Sci Heat Treat 13, 132–136 (1971). https://doi.org/10.1007/BF00650930

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  • DOI: https://doi.org/10.1007/BF00650930

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