Metal Science and Heat Treatment

, Volume 14, Issue 3, pp 215–218 | Cite as

Structure and properties of cast Cr−Ni steel with different nickel, silicon, and manganese concentrations

  • V. G. D'yakov
  • Z. A. Abramova
  • N. N. Efremov
Heat Resistant Steels and Alloys
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Conclusions

  1. 1.

    Raising the manganese content to 3.5% has no effect on the strength, ductility, or toughness of steel 25Kh23N7SL, lowers the amount of δ ferrite somewhat, stabilized the γ solid solution during isothermal heating, and extends the range in which σ phase is stable to lower temperatures.

     
  2. 2.

    Raising the silicon content to 3.2% increases the hardness, sharply reduces the ductility and toughness, promotes the formation of σ phase during isothermal heating, and extends the region in which σ phase exists to lower temperatures.

     
  3. 3.

    Raising the nickel content from 4.5 to 7.5% increases the ductility and toughness of the steel, stabilizes the γ solid solution during isothermal heating, and extends the range in which σ phase is stable to higher temperatures.

     
  4. 4.

    The structural and mechanical properties are most stable for the steel with 6.5–7.5% Ni with not over 1.2% Si and no more than 1% Mn.

     

Keywords

Silicon Mechanical Property Nickel Ferrite Manganese 

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Literature cited

  1. 1.
    V. G. D'yakov and Z. A. Abramova, Metal. i Term. Obrabotka Metal., No. 1 (1966).Google Scholar

Copyright information

© Consultants Bureau, a division of Plenum Publishing Corporation 1972

Authors and Affiliations

  • V. G. D'yakov
  • Z. A. Abramova
  • N. N. Efremov

There are no affiliations available

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