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Metal Science and Heat Treatment

, Volume 30, Issue 10, pp 778–781 | Cite as

Effect of structural parameters and nonmetallic inclusions on the impact strength of rail steel

  • É. L. Kolosova
  • V. I. Syreishchikova
  • A. B. Dobuzhskaya
  • I. V. Koshina
  • M. A. Stambul'chik
Structural Steels
  • 38 Downloads

Conclusions

  1. 1.

    A reduction in the level of impact strength for quenched and tempered steel on introducing vanadium and titanium into it is caused by cementite platelet thickening and presence of dispersed V(C, N) and TiN particles. Microalloying with zirconium in the amounts studied does not affect steel structure and the level of impact strength.

     
  2. 2.

    Cases of a reduction in impact strength for rail steel to 15 J/cm2 are connected with presence in their structure of a large number of ductile oxide inclusions. Apparently, by being located along grain boundaries, they disrupt steel continuity. Formation of these inclusions may be connected with insufficient steel deoxidation.

     

Keywords

Oxide Titanium Zirconium Vanadium Cementite 
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.
    S. A. Saltykov, Stereometric Metallography [in Russian], Metallurgiya, Moscow (1970).Google Scholar
  2. 2.
    Yu. I. Matrosov, "Measurement of interplatelet distance in pearlite," in: Production and Properties of Steels and Alloys: Collected Works of TsNIIChermet, No. 63, [in Russian], Metallurgiya, Moscow (1968).Google Scholar
  3. 3.
    T. Gladman, I. D. Melvor, and F. D. Pickering, "Some aspects of the structure-property relationships in high-carbon ferrite-pearlite steels,"210, No. 11, 916–930 (1972).Google Scholar
  4. 4.
    M. I. Gol'dshtein and V. M. Farber, Dispersion Strengthening of Steel [in Russian], Metallurgiya, Moscow (1979).Google Scholar
  5. 5.
    V. S. Kovalenko, V. N. Murav'ev, and L. F. Filina, "Effect of zirconium on the nature and distribution of nonmetallic inclusions in carbon steel," Stal', No. 2, 163–167 (1964).Google Scholar
  6. 6.
    M. P. Braun, Microalloying of Steel [in Russian], Naukova Dumka, Kiev (1982).Google Scholar
  7. 7.
    F. B. Pickering, Physical Metallography and Treatment of Steels [Russian translation], Metallurgiya, Moscow (1982).Google Scholar
  8. 8.
    V. M. Gridnev, Yu. Ya. Meshkov, and G. A. Pakharenko, "Cold brittleness of steel with lamellar pearlite," in: Metal Physics, No. 59, [in Russian], Naukova Dumka, Kiev (1975).Google Scholar
  9. 9.
    Yu. Ya. Meshkov, G. A. Pakharenko, and A. V. Shevchenko, "Effect of cementite morphology on the brittle failure of steel," Metallofizika,6, No. 4, 68–71 (1984).Google Scholar

Copyright information

© Plenum Publishing Corporation 1989

Authors and Affiliations

  • É. L. Kolosova
  • V. I. Syreishchikova
  • A. B. Dobuzhskaya
  • I. V. Koshina
  • M. A. Stambul'chik

There are no affiliations available

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