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Phase composition of heat-resistant ferritic and austenitic steels precipitation-hardened by intermetallic compounds

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

Conclusions

  1. 1.

    The main hardening phase in ferritic and austenitic steels alloyed with tungsten and molybdenum was Laves' phase. Depending on the alloying with tungsten or molybdenum, or both together, phases of the following type are formed: Fe2W, Fe2Mo, Fe2(W, Mo).

  2. 2.

    In the ferritic steels investigated a niobium carbonitride was formed in addition to Laves' phase. In the austenitic steels three phases were formed—Laves' phase, niobium carbonitride, and M23CP6 carbide.

  3. 3.

    The maximum amount of Laves' phase in steel 12Kh2MV8FB corresponds to the highest hardness.

  4. 4.

    The highest heat resistance of steel 12Kh2MV8FB resulted from tempering at 725–750°C.

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Literature cited

  1. I. L. Mirkin and M. I. Fantaeva, Coll: Structure and Properties of Heat-Resisting Materials [in Russian], TsNIITMASh Book No. 93, Mashgiz (1959).

  2. I. L. Mirkin and M. I. Fantaeva, Coll: Investigation of New Heat-Resisting Alloys for Power Engineering [in Russian], TsNIITMASh Book No. 101, Mashgiz (1961).

  3. K. A. Lanskaya, Teploénergetika, No. 7 (1965).

  4. M. V. Pridantsev and K. A. Lanskaya, Boiler Steels [in Russian], Metallurgizdat, Moscow (1959).

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  5. K. A. Lanskaya and É. N. Gorchakova, Teploénergetika, No. 7 (1968).

  6. W. Sykes, R. Kent, Van Horne, Trans, AIME, No. 5 (1953).

  7. R. P. Zaletaeva, N. F. Lashko, M. D. Nesterova, and S. A. Yuganova, Dokl. Akad. Nauk SSSR, No. 3 (1950).

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Authors
  1. É. N. Gorchakova
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  2. K. A. Lanskaya
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  3. E. F. Yakovleva
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Additional information

TsNIIChERMET. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 3, pp. 14–19, March, 1969

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Gorchakova, É.N., Lanskaya, K.A. & Yakovleva, E.F. Phase composition of heat-resistant ferritic and austenitic steels precipitation-hardened by intermetallic compounds. Met Sci Heat Treat 11, 180–184 (1969). https://doi.org/10.1007/BF00658726

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  • DOI: https://doi.org/10.1007/BF00658726

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