Metal Science and Heat Treatment

, Volume 11, Issue 10, pp 798–801 | Cite as

High-strength nickel steels

  • R. D. Zaitseva
  • M. D. Perkas
Structural Steels
  • 34 Downloads

Conclusions

  1. 1.

    In steels with 0.25–0.35% C and 10–14% Ni the mechanical properties after quenching (cooling in air) are approximately the same as for carbon-free maraging steels: σb=190−200 kg/mm2; δ=10–12%; ψ=45–50%;an=6–7 kg-m/cm2;ap=1.7–2.2 kg-m/cm2. Small cold plastic deformation (2–5%) substantially increases the strength characteristics: ΔσT=50−60 kg/mm2, Δσb=20−30 kg/mm2.

     
  2. 2.

    The high plasticity and resistance to crack propagation of the steels investigated are due to the fact that nickel increases dislocation mobility and promotes relaxation processes, which are necessary to prevent crack nucleation and propagation and brittle fracture.

     

Keywords

Mechanical Property Nickel Brittle Plastic Deformation Relaxation Process 

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Copyright information

© Consultants Bureau 1969

Authors and Affiliations

  • R. D. Zaitseva
  • M. D. Perkas

There are no affiliations available

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