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Effect of alkaline and rare-earth metals on the composition of sulfide inclusions and properties of cast steel

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Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    The addition of alkaline and rare-earth metals to a low-alloy steel changes the composition of the sulfide inclusions. Alkaline-earth elements partially, and rare-earth elements completely, displace manganese in the sulfide inclusions.

  2. 2.

    Both the ductile and brittle regions of the fracture surface in both modified and unmodified steels are the same. However, there is somewhat of an increase in the fraction of microcavities (fibrous component) in impact fractures of steels with the additives.

  3. 3.

    REM and AEM additions in steel 20GFBL increase the energy of impact rupture in the materiala 100T and increase the resistance to thermal fatigue crack nucleation and growth. This is due to a change in the composition and a globularization of the sulfide inclusions.

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Literature cited

  1. A. E. Aksel'rod, L. P. Zhitova, V. V. Popov, et al., "The effect of modifiers on the nonmetallic inclusions and properties of steels 20GFL and 08GFL," Liteinoe Proizvod., No. 3, 10–11 (1983).

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Authors
  1. A. E. Aksel'rod
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  2. V. V. Popov
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  3. A. F. Filippenkov
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Additional information

Ural Scientific-Research Institute of Iron Metallurgy. Ural Polytechnical Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 12, pp. 47–50, December, 1988.

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Aksel'rod, A.E., Popov, V.V. & Filippenkov, A.F. Effect of alkaline and rare-earth metals on the composition of sulfide inclusions and properties of cast steel. Met Sci Heat Treat 30, 931–935 (1988). https://doi.org/10.1007/BF00775319

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  • DOI: https://doi.org/10.1007/BF00775319

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