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Strengthening of high-carbon austenitic steels by deformation and aging

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Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    High-temperature deformation is an effective method of improving the mechanical properties of austenitic Fe−Mn steels. Treatment with Tdef=900° and 70% reduction in five passes provides high values of the mechanical properties without additional aging. Steel 60G12Kh9F2 is nonmagnetic after this treatment and has the following mechanical properties: σb = 1650 MPa, σ0.2 = 1100 MPa, δ = 26%, ψ = 36%.

  2. 2.

    Strengthening by means of hydrostatic extrusion and aging ensures high strength and ductility of Cr−Mn steels, which are not magnetic.

  3. 3.

    Martensite is formed in steels with 10–14% Mn during deformation, which induces embrittlement. Steels with 18–20% Mn have high ductility, since fine strain twins occur in the process of deformation, causing relaxation of local stresses similar to the TRIP effect; no strain martensite is observed.

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Literature cited

  1. I. Ya. Georgieva, A. A. Gulyaev, and E. Yu. Kondrat'eva, “Deformation twinning and mechanical properties of austenitic manganese steels” Metalloved. Term. Obrab. Met., No. 8, 56 (1976).

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  2. T. P. Vasechkina et al., “Structure and mechanical properties of metastable Cr−Mn steels”, Fiz. Met. Metalloved.,46, No. 5, 963 (1978).

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Authors
  1. V. S. Zharinova
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  2. I. Ya. Georgieva
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  3. G. A. Pegushina
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  4. B. I. Beresnev
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  5. A. P. Bashchenko
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Additional information

I. P. Bardin Central Scientific-Research Institute of Ferrous Metallurgy, N. É. Bauman Moscow Technical College. Institute of Metal Physics, Ural Science Center, Academy of Sciences of the USSR. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 11, pp. 59–61, November, 1980.

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Zharinova, V.S., Georgieva, I.Y., Pegushina, G.A. et al. Strengthening of high-carbon austenitic steels by deformation and aging. Met Sci Heat Treat 22, 851–854 (1980). https://doi.org/10.1007/BF00779443

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  • DOI: https://doi.org/10.1007/BF00779443

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