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Influence of instability of the β-phase of the aluminide coating on the condition and scale resistance of the surface layer of Ni−Al alloys

  • High-Temperature Strength Steels and Alloys
  • Published:
Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    The martensite transformation of the β-phase of aluminide coatings leads to a reduction in the life of aluminized parts.

  2. 2.

    The reduction in the heat resistance of the investigated alloys is related to strengthening of spalling off of the oxide film.

  3. 3.

    The volume changes in the forward and reverse martensite transformations are a source of increase in the stresses leading to failure of the protective layer.

  4. 4.

    In development of compositions of multicomponent protective coatings it is necessary to take into consideration the influence of alloy elements on the stability of the β-phase.

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Literature cited

  1. V. S. Litvinov, E. G. Pantsyreva, and I. L. Kupriyanov, "The martensite transformation in the aluminized layer of a nickel alloy," Metalloved. Term. Obrab. Met., No. 6, 71–72 (1973).

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  3. E. G. Lesnikova, V. S. Litvinov, and A. A. Arkhangel'skaya, "The stability of β-phase in nickel—aluminum alloys and the influence of iron and cobalt on it," Fiz. Met. Metalloved.,38, No. 3, 580–585 (1974).

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  4. V. S. Litvinov and E. G. Lesnikova, "The stability of β-phase in Ni−Al−Si alloys," Fiz. Met. Metalloved.,44, No. 6, 1297–1299 (1977).

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  5. E. G. Lesnikova and V. S. Litvinov, "The influence of chromium on the stability of nickel-aluminum β-solid solutions", in: The Heat Treatment and Physics of Metals/Proceedings of the Universities of the Russian SFSR [in Russian], Ural Polytech. Inst. (1978), pp. 76–80.

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Authors
  1. E. G. Lesnikova
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  2. V. P. Lesnikov
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Additional information

Ural Polytechnic Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 50–53, May, 1986.

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Lesnikova, E.G., Lesnikov, V.P. Influence of instability of the β-phase of the aluminide coating on the condition and scale resistance of the surface layer of Ni−Al alloys. Met Sci Heat Treat 28, 372–376 (1986). https://doi.org/10.1007/BF00814696

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  • DOI: https://doi.org/10.1007/BF00814696

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