Metal Science and Heat Treatment

, Volume 11, Issue 3, pp 185–189 | Cite as

Heat-resistant alloys hardened with Ni3Nb

  • L. N. Zimina
  • G. A. Sveshnikova
  • E. E. Sukhova
Heat-Resistant Steels and Alloys
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Conclusions

  1. 1.

    Heat-resisting alloys KhN60MBVYu and KhN50MBBYu, hardened by precipitation of Ni3Nb, have high mechanical properties at room and operating temperatures.

     
  2. 2.

    The addition of 10% Fe promotes the formation of M7W6, grain refining of the solid solution, and accelerates the transformation of the metastable Ni3Nb phase with a fcc lattice into the equilibrium modification with an orthorhombic lattice.

     
  3. 3.

    The M7W6 phase in the grain boundaries of the KhN50MBVYu alloy provides high plasticity at maximum hardening temperatures.

     

Keywords

Precipitation Mechanical Property Solid Solution Operating Temperature High Plasticity 

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Literature cited

  1. 1.
    G. A. Sveshnikova and A. M. Borzdyka, Izv. Akad. Nauk SSSR, Metally, No. 6 (1966).Google Scholar
  2. 2.
    G. A. Sveshnikova, Metal. i Term. Obrabotka Metal., No. 1 (1966).Google Scholar
  3. 3.
    L. N. Zimina and M. V. Pridantsev, Coll: Special Steels and Alloys, No. 17 [in Russian], TsNIIChM (1960).Google Scholar
  4. 4.
    R. K. Jifkins, Coll: Atomic Mechanism of Failure [Russian translation], metallurgizdat, Moscow (1963).Google Scholar
  5. 5.
    D. McLean, Grain Boundaries in Metals, Oxford University Press, London (1957).Google Scholar
  6. 6.
    E. E. Levin and B. M. Gurelev, Metal. i Term. Obrabotka Metal., No. 1 (1967).Google Scholar

Copyright information

© Consultants Bureau 1969

Authors and Affiliations

  • L. N. Zimina
  • G. A. Sveshnikova
  • E. E. Sukhova

There are no affiliations available

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