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Influence of heat treatment on the structure and stress-rupture strength of 10Kh2M steel tubing

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Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    Cold bending of tubular blanks of 10Kh2M steel has an insignificant influence on the level of microdistortions, decreases the lattice parameter somewhat, does not change the phase composition of the carbides, and leads to cracking of the coarse M23C6 carbides.

  2. 2.

    Tempering at 710°C after bending reduces the level of microdistortions by more than three times and the intrinsic broadening of the (110) line by more than two times, increases the lattice parameter, and changes the phase composition of the carbide phase (M3C dissolves).

  3. 3.

    The stress-rupture strength of 10Kh2M steel coils in the unheat treated condition is higher at stresses exceeding 160 N/mm2 than in the heat treated condition, which is the result of the favorable kinetics of occurrence of structural transformations. With stresses below 160 N/mm2 and in service for 105 h at 505°C coils in the heat treated condition, that is, with a more stable structure, possess higher stress-rupture strength.

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Authors
  1. P. A. Antikain
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  2. L. I. Lepekhina
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  3. V. E. Borisov
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  4. T. N. Shevchenko
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  5. Yu. D. Mikulina
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Additional information

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 8, pp. 53–56, August, 1988.

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Antikain, P.A., Lepekhina, L.I., Borisov, V.E. et al. Influence of heat treatment on the structure and stress-rupture strength of 10Kh2M steel tubing. Met Sci Heat Treat 30, 627–630 (1988). https://doi.org/10.1007/BF00778271

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  • DOI: https://doi.org/10.1007/BF00778271

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