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Fatigue resistance of the heat-resistant alloy KhN55MVTs

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Abstract

Fatigue resistance of the nickel alloy KhN55MVTs is investigated in the range of 550–1000°C temperatures and 102–107-cycle durabilities. The alloy is recommended for manufacturing large-size equipment to operate at up to 950°C for prolonged periods. It is shown that, in the initial post-heat treatment state, the alloy displays adequately high resistance to cyclic loads in the short-time range but, in the multicycle range, is inferior in durability to a series of materials used in gas-turbine engineering. To a lesser extent, this difference is observed for specimens of the alloy subjected to prolonged high-temperature holding. Durability of the alloy increases with increase in degree of alloying with zirconium.

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Authors and Affiliations

  1. Institute of Mechanics of the Ukrainian SSR, USSR

    Yu. A. Dushin, A. V. Zheldubovskii, E. G. Ivashko, N. A. Medvedev, V. A. Petrov & A. D. Pogrebnyak

Authors
  1. Yu. A. Dushin
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  2. A. V. Zheldubovskii
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  3. E. G. Ivashko
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  4. N. A. Medvedev
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  5. V. A. Petrov
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  6. A. D. Pogrebnyak
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Additional information

Translated from Problemy Prochnosti, No. 7, pp. 79–83, July, 1990.

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Dushin, Y.A., Zheldubovskii, A.V., Ivashko, E.G. et al. Fatigue resistance of the heat-resistant alloy KhN55MVTs. Strength Mater 22, 1037–1041 (1990). https://doi.org/10.1007/BF00767554

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  • DOI: https://doi.org/10.1007/BF00767554

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