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Metal Science and Heat Treatment

, Volume 17, Issue 5, pp 421–424 | Cite as

Increasing the service life of ingot molds of cast iron alloyed with aluminum

  • V. B. Shashkov
  • A. G. Nepomnyashchii
  • I. A. Shcherbilis
  • V. K. Shashkova
  • M. S. Burlak
Cast Irons
  • 26 Downloads

Conclusions

  1. 1.

    The addition of 0.05–0.15% Al has a modifying effect on the microstructure of cast iron. Large graphite inclusions are formed with over 0.20% Al.

     
  2. 2.

    Changes in the microstructure of cast iron during thermal cycling at 850°C occur in five stages. These changes are accompanied by changes in density, hardness, and dimensions.

     
  3. 3.

    The change in density varies with the operating temperature — the cast iron in the inner zone of the wall of the mold grows and becomes less dense; the density of the outer zones increases, which increases the possibility of cracks being formed.

     
  4. 4.

    Alloying of cast iron with aluminum increases the resistance of ingot molds to crack formation and crazing (the optimal concentration is ∼0.87% Al).

     

Keywords

Iron Aluminum Microstructure Graphite Mold 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature cited

  1. 1.
    I. V. Shermazan, V. D. Zelenova, and A. P. Gulyaev, "Effect of grain size and strength on work of crack initiation and work of crack propagation," Izv. Vuzov, Chernaya Metallurgiya, No. 3, 138–140 (1969).Google Scholar
  2. 2.
    M. M. Shteinberg, in: Problems of Metal Science and Heat Treatment [in Russian], Mashgiz, Moscow —Sverdlovsk (1956), pp. 63–98.Google Scholar
  3. 3.
    D. P. Ivanov, "Synthetic cast iron, properties and methods of obtaining it", Lit. Proiz., No. 10, 1–6 (1972).Google Scholar
  4. 4.
    V. A. Baranov et al., Growth of Cast Iron and Steel during Thermal Cycling [in Russian], Tekhnika, Kiev (1967), p. 140.Google Scholar
  5. 5.
    V. B. Shashkov et al., "Effect of phase transformation on crazing of cast iron ingot molds," Lit. Proiz., No. 7, 32–33 (1973).Google Scholar
  6. 6.
    Yu. G. Bobro, Aluminum Cast Irons [in Russian], Izd. Khar. Univ. Khar'kov (1964).Google Scholar

Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • V. B. Shashkov
  • A. G. Nepomnyashchii
  • I. A. Shcherbilis
  • V. K. Shashkova
  • M. S. Burlak

There are no affiliations available

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