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Effect of strain aging on the tendency of steel 38Kh5MSFA to fracture

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Conclusions

  1. 1.

    Deformation up to 1.2% by stretching and aging at 200–300° of steel 38Kh5MSFA tempered at low temperature do not induce any changes in the values ofa p, σ b T , or Kc, nor the kinetics of crack development, i.e., do not increase the tendency of the steel to fracture.

  2. 2.

    Dynamic aging during deformation at elevated temperatures (200–300°) leads to an increase of the elongation and also the ultimate and yield strengths of steel 38Kh5MSFA.

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Literature cited

  1. 1.

    V. P. Il'ina et al., "Effect of small plastic deformation on the mechanical properties of steel 38Kh5MSFA," Metal. i Term. Obrabotka Metal., 12, 38–40 (1968).

  2. 2.

    V. I. Sarrak, S. O. Suvorova, and R. I. Éntin, "Mechanism of strain aging of martensite," in: Investigations of Thermomechanical Treatment of Metals [in Russian], Chermetinformatsiya, Series 12, No. 6 (1966), p. 31.

  3. 3.

    V. I. Sarrak, S. O. Suvorova, and R. I. Éntin, "Strain aging of iron" in: Problems of Metal Science and Physics of Metals [in Russian], TsNIIChM (No. 36) (1964), pp. 125–143.

  4. 4.

    V. P. Vylezhnev et al., "Effect of plastic deformation on the condition of the solid solution of carbon in martensite in quenched steel," Fiz. Metal. Metalloved.,24, 1, 186–188 (1967).

  5. 5.

    G. A. Beresnev et al., "Effect of strain aging of martensite on susceptibility to brittle fracture of structural steel," Fiz. Metal. Metalloved.24, 3, 540–545 (1967).

  6. 6.

    K. F. Starodubov and I. E. Dolzhenkov, "Dynamic strain aging of carbonsteels," in: Effect of Dislocations and Impurity Atoms [in Russian], TPI, Tula (1969), pp. 201–205.

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Additional information

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 4, pp. 54–59, April, 1974.

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Il'ina, V.P., Éntin, R.I. & Dubrovin, N.M. Effect of strain aging on the tendency of steel 38Kh5MSFA to fracture. Met Sci Heat Treat 16, 337–340 (1974). https://doi.org/10.1007/BF00679230

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Keywords

  • Yield Strength
  • Elevated Temperature
  • Strain Aging
  • Crack Development
  • Dynamic Aging