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Metal Science and Heat Treatment

, Volume 19, Issue 12, pp 1065–1067 | Cite as

Increase in the structural strength of carbon steel by HTMT with isothermal decomposition of austenite

  • L. I. Tushinskii
  • Yu. V. Kalloida
  • L. B. Tikhomirova
Technical Information
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Conclusions

  1. 1.

    After HTMT with isothermal decomposition of austenite in the pearlitic region (HTMDIT) the mechanical properties of carbon steel U8 are higher at all decomposition temperatures of austenite tested than after standard isothermal treatment (DIT).

     
  2. 2.

    After HTMDIT the maximum increase in the strength (σb increases by 8 kgf/mm2, σ0.2 by 15 kgf/mm2) and ductility (Sk by 57 kgf/mm2, ψ by 15%) in comparison with DIT is obtained with isothermal decomposition of austenite at 500°.

     
  3. 3.

    The increase in the structural strength after HTMDIT as compared with DIT is also confirmed by the resistance to microplastic deformation and the fracture toughness of samples with a started crack.

     

Keywords

Mechanical Property Austenite Ductility Fracture Toughness Carbon Steel 
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.
    L. I. Tushinskii and L. B. Tikhomirova, "Thermomechanical treatment of carbon steel," Metalloved. Term. Obrab. Met., No. 2, 42 (1972).Google Scholar
  2. 2.
    K. I. Tushinskaya et al., Strengthening of Carbon Steel by Microalloying and Thermomechanical Treatment [in Russian], Tr. Novosibirsk. Inst. Inzh. Zheleznodorozhnogo Transporta, No. 71, Novosibirsk (1968).Google Scholar
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    K. I. Tushinskaya et al., Strengthening of Carbon Steel by Thermomechanical Treatment [in Russian], Tr. Novosibirsk, Inst. Inzh. Zheleznodorozhnogo Transporta, No. 71, Novosibirsk (1969).Google Scholar
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    L. B. Tikhomirova and A. P. Artem'ev, "Increase in the structural strength of carbon steel by thermomechanical treatment," Izv. Vyssh. Uchebn. Zaved., Chern. Metall., No. 10, 101 (1973).Google Scholar
  5. 5.
    L. B. Tikhomirova, and Yu. V. Kalloida, "Strengthening of eutectoid carbon steel by HTMDIT," in: Structure and Structural Strength of Steel [in Russian], Tr. Novosibirsk, Elektrotekh. Inst., Novosibirsk (1974), p. 110.Google Scholar
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    Yu. G. Virakovskii, Ya. B. Gurevich, and A. V. Krupin, "Thermomechanical treatment of steel in the process of the austenite-pearlite transformation," Stal' No. 8, 752 (1972).Google Scholar
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    M. L. Bernshtein et al., Effect of Hot Rolling on the Structure and Properties of Steel 36G2S after Isothermal Transformation [in Russian], TsNIITEIChERMET Byulleten' No. 22 (714) (1973), p. 48.Google Scholar
  8. 8.
    M. L. Bernshtein, "Hot plastic deformation and mechanism of the increase in strength during thermomechanical treatment of steel," Stal', No. 2, 157 (1972).Google Scholar

Copyright information

© Plenum Publishing Corporation 1978

Authors and Affiliations

  • L. I. Tushinskii
  • Yu. V. Kalloida
  • L. B. Tikhomirova

There are no affiliations available

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