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Metal Science and Heat Treatment

, Volume 28, Issue 9, pp 658–663 | Cite as

Selection of parameters of laser heating of carbon steels for obtaining the specified hardening depth

  • E. A. Dubrovskaya
  • Ch. V. Kopetskii
  • V. S. Kraposhin
  • I. V. Rodin
Heat Treatment Using Highly Concentrated Energy Sources
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Conclusions

  1. 1.

    The applicability of the unidimensional model of heating a homogeneous semi infinite body for selecting the parameters of laser hardening without fusion of the surface of carbon steels with different carbon content was experimentally confirmed.

     
  2. 2.

    Upon transition from the regime of heating with fusion of the surface to the regime of heating without fusion, the shape of the laser track changes.

     
  3. 3.

    The distribution of microhardness across the thickness of the zone of laser hardening is not the same in steels with different carbon content: with 0.2% C the microhardness of steel decreases monotonically, with 0.8% C it decreases stepwise. Such a change of the microhardness profile upon change of carbon content may be connected with the different path length of carbon diffusion in steels with different amounts of hypoeutectic ferrite.

     

Keywords

Ferrite Carbon Content Path Length Carbon Steel Laser Heating 
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.

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Literature cited

  1. 1.
    V. V. Korneev, F. K. Kosyrev, S. F. Moryashchev, and A. A. Ukradizhenko, "Some dependences of heat treatment by laser," Fiz. Khim. Obrab. Mater., No. 3, 3–6 (1980).Google Scholar
  2. 2.
    W. M. Steen and C. Courtney, "Surface heat treatment of En 8 steel using a 2 kW continuous-wave CO2 laser," Met. Technol., December, 458–462 (1979).Google Scholar
  3. 3.
    F. K. Kosyrev and V. S. Kraposhin, "The use of known thermophysical evaluations for selecting the parameters of laser heat treatment," Poverkhnost', No. 9, 118–123 (1983).Google Scholar

Copyright information

© Plenum Publishing Corporation 1987

Authors and Affiliations

  • E. A. Dubrovskaya
  • Ch. V. Kopetskii
  • V. S. Kraposhin
  • I. V. Rodin

There are no affiliations available

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