Advertisement

Springer Nature is making Coronavirus research free. View research | View latest news | Sign up for updates

Titanium carbonitrides in steels alloyed with tungsten and molybdenum

  • 30 Accesses

Conclusions

The possibility of tungsten dissolving in titanium carbonitride present in the steel is confirmed by two factors: 1) the solubility of tungsten in titanium carbide, established in the binary WC-TiC system [4–7]; 2) the existence of four phases with the same type of structure and similar lattice constants in the Ti−W−C−N system (a=4.33 Å for TiC,a=4.24 Å for TiN,a=4.27 Å for W2C,a=4.126 Å for W2N [7]).

Considering the affinity of tungsten and molybdenum and their interchangeability in carbides of other types, one would expect partial replacement of titanium, with molybdenum in carbonitrides. The solubility of tungsten and molybdenum in titanium carbonitride was demonstrated in two steels of different types — austenitic steel 417455 and pearlitic steel T 67. In steel T60 with 13% Cr, however, neither tungsten nor molybdenum was found in the carbonitride. Consequently, it can be assumed that the solution of tungsten and molybdenum in Ti(C, N) is also determined by the properties of the metallic matrix and the treatment or primary cooling conditions of the steel. This determines whether or not tungsten or molybdenum partially replaces titanium in carbonitride.

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

Literature Cited

  1. 1.

    F. Yandosh, "Reason for rapid etching of grain boundaries in forged austenitic steel of the Mn−Cr−Ni type after conventional treatment," Metall. Mater. No. 1, 684 (1973).

  2. 2.

    D. Chekhova and F. Yandosh, "Carbonitride inclusions in paramagnetic steels," International Conference on Optics, X-Ray Beams, and Microanalysis [in Russian], Nauka, Kiev (1974).

  3. 3.

    I. Dushek et al., "Presence of molybdenum in titanium carbonitride," Metall. Mater., No. 4, 550 (1974).

  4. 4.

    R. Kiefer, J. Inst. Met.,97, 1964 (1969).

  5. 5.

    R. Krainer, Arch. Eisenhüttenw.,21, 39 (1950).

  6. 6.

    H. Goldschmidt, Interstitial, Alloys, Butterworths, London (1967).

  7. 7.

    W. Pearson, Handbook of Lattice Spacing and Structures of Metals and Alloys, London (1967).

Download references

Additional information

Skoda, Pilsen, Czechoslovakia. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 60–62, September, 1978.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Yandosh, F., Chekhova, D. Titanium carbonitrides in steels alloyed with tungsten and molybdenum. Met Sci Heat Treat 20, 756–758 (1978). https://doi.org/10.1007/BF00703761

Download citation

Keywords

  • Titanium
  • Carbide
  • Tungsten
  • Molybdenum
  • Lattice Constant