Advertisement

Metal Science and Heat Treatment

, Volume 35, Issue 2, pp 102–106 | Cite as

Effect of submicron-grain structure on the mechanical properties of low-carbon steels

  • A. V. Korznikov
  • I. M. Safarov
  • R. Z. Valiev
  • B. M. Bronfin
  • A. A. Emel'yanov
Structural Steels
  • 35 Downloads

Conclusions

  1. 1.

    Rolling at temperatures above the recrystallization temperature with high levels of rolling makes it possible to obtain in low-carbon steels an improved submicron-grain structure with low dislocation density and a grain size of 0.8 μm, and at a temperature below the recrystallization temperature it leads to an incomplete submicron-grain structure with high defect density and a grain size of 0.7 μm.

     
  2. 2.

    Preparation of a submicron-grain structure is a promising method for strengthening steels of the 03KhGSF and 20GSF type. After treatment by the schedule II suggested the strength of steels 20GSF and 03KhGSF increases by a factor of two to three compared with the hot-rolled condition: σ0.2 =895 and 935 N/mm2, σ2 respectively. Ductility characteristics are retained to quite a high level, and the impact strength at ttest=−196°C increases by a factor of ten.

     

Keywords

Grain Size Mechanical Property Recrystallization Ductility Dislocation Density 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    R. W. Hertzberg, Deformation and Fracture Mechanics of Engineering Materials, 2nd ed., Wiley (1983).Google Scholar
  2. 2.
    F. H. Froes and C. Suryanarayana, "Nanocrystalline metals for structural applications", JOM, No. 6, 12–17 (1989).Google Scholar
  3. 3.
    R. Z. Valiev, N. A. Krasilnikov, and N. K. Tsenev, "Plastic deformation of alloys with a submicron-grained structure", Mater. Sci. Eng., No. 137, 35–40 (1991).Google Scholar
  4. 4.
    O. R. Valiakhmetov, R. M. Galeev, and G. A. Salishchev, "Mechanical properties of titanium alloy VT8 with a submicrocrystalline structure", Fiz. Met. Metalloved., No. 11, 204–206 (1990).Google Scholar
  5. 5.
    R. Z. Abdulov, R. Z. Valiev, and N. A. Krasilnikov, Mater. Sci. Lett., No. 9, 1445–1447 (1990).Google Scholar
  6. 6.
    S. S. Gorelik, Recrystallization of Metals and Alloys [in Russian], Metallurgiya, Moscow (1978).Google Scholar

Copyright information

© Plenum Publishing Corporation 1993

Authors and Affiliations

  • A. V. Korznikov
  • I. M. Safarov
  • R. Z. Valiev
  • B. M. Bronfin
  • A. A. Emel'yanov

There are no affiliations available

Personalised recommendations