Skip to main content
SpringerLink
Log in

Structure and properties of vanadium steels after isothermal decomposition of supercooled austenite

  • Theory
  • Published:
Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    Isothermal decomposition of supercooled austenite in steels of the 27F1B and 27KhMF1B types at 650° for 30 min begins with the formation of highly dispersed particles of vanadium carbide. Field-ion microscopy reveals the precipitation of carbide phases with two morphologies — points 20–50 Å in size that are grouped in linear chains with a distance of 10–20 Å between particles and needlelike particles 200–400 Å long that are oriented in direction [100] of the cubic lattice.

  2. 2.

    In the process of isothermal decomposition of supercooled austenite at 720° for 30 min lamellar vanadium carbide particles with dimensions of (120–200)×(40–60)×(5–10) Å are formed, which are located in plane {100} of the matrix.

  3. 3.

    After transformation at 650° the steels investigated tend to undergo brittle fracture, since the ferrite formed in the transformation at 650° has a higher density of defects than after transformation at 720°.

  4. 4.

    After isothermal decomposition at 650° the steels have high strength and low ductility. Subsequent tempering at 720° for 3 h lowers the strength and increases the ductility and toughness.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

Literature cited

  1. A. G. Rakhshtadt et al., "Effect of heat treatment on the formation, shape, and stability of vanadium carbides in vanadium steels," Metalloved. Term. Obrab. Met., No. 6, 23 (1975).

    Google Scholar 

  2. A. F. Edneral, V. L. Kirienko, and L. P. Potapov, "Field-ion microscopic study of the structure of aged martensite in an Fe−Ni−Co−Mo alloy," Dokl. Akad. Nauk SSSR,213, No. 3, 567 (1973).

    Google Scholar 

  3. É. Myuller and T. Tson', Field-Ion Microscopy [in Russian], Metallurgiya, Moscow (1972).

    Google Scholar 

  4. L. P. Potapov, "Use of crystallographic projections in field-ion microscopy," Kristallografiya,15, No. 1, 161 (1970).

    Google Scholar 

Download references

Authors
  1. A. G. Rakhstadt
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. N. M. Suleimanov
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. V. I. Kirienko
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. K. A. Lanskaya
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. L. P. Potapov
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

N. E. Bauman Moscow Technical College, I. P. Bardin Central Scientific-Research Institute of Ferrous Metallurgy. Baku Condenser Factory. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 4, pp. 22–24, April, 1979.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Rakhstadt, A.G., Suleimanov, N.M., Kirienko, V.I. et al. Structure and properties of vanadium steels after isothermal decomposition of supercooled austenite. Met Sci Heat Treat 21, 270–273 (1979). https://doi.org/10.1007/BF00775106

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00775106

Keywords

Search

Navigation