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Variation of the mechanical properties with the hydrogen content of the heat-treated alloy VT8

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Conclusions

  1. 1.

    Hydrogen has little effect on the properties of the annealed VT8 alloy due to the increase in the quality of titanium sponge, particularly the lower oxygen concentration. Even 0.1% H does not lead to any sharp reduction of plasticity after isothermal annealing.

  2. 2.

    The presence of a notch reveals the susceptibility of the annealed VT8 alloy to hydrogen embrittlement at lower hydrogen concentrations. Notched samples are embrittled at a concentration of 0.03% H.

  3. 3.

    After quenching from the β-region the VT8 alloy is more suceptible to hydrogen embrittlement than after annealing. This is most evident after additional aging for a short time.

  4. 4.

    Hydrogen reduces the ultimate and long-term strength of the annealed VT8 alloy at temperatures up to 550°C.

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Literature cited

  1. 1.

    V. A. Livanov, A. A. Bukhanova, and B. A. Kolachev, MATI, No. 43 (1960).

  2. 2.

    V. A. Livanov, A. A. Bukhanova, B. A. Kolachev, and N. Ya. Gusel'nikov, Metal, i Term. Obrabotka Metal., No. 5 (1965).

  3. 3.

    B. A. Kolachev, V. A. Livanov, A. A. Bukhanova, and N. Ya. Gusel'nikov, Izv. Vuzov. Tsvetnaya Metallurgiya, No. 3 (1965).

  4. 4.

    B. A. Kolachev, V. A. Livanov, A. A. Bukhanova, N. Ya. Gusel'nikov, and V. S. Lyasotskaya, Izv. Vuzov. Tsvetnaya Metallurgiya, No. 4 (1966).

  5. 5.

    V. A. Livanov, A. A. Bukhanova, and B. A. Kolachev, MATI, No. 50 (1961).

  6. 6.

    R. Jaffee and D. Williams, Trans. Am. Soc. Metals,60 (1959).

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Additional information

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 30–33, September, 1968.

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Kolachev, B.A., Livanov, V.A., Bukhanova, A.A. et al. Variation of the mechanical properties with the hydrogen content of the heat-treated alloy VT8. Met Sci Heat Treat 10, 700–703 (1968). https://doi.org/10.1007/BF00652843

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Keywords

  • Hydrogen
  • Titanium
  • Sponge
  • Oxygen Concentration
  • Lower Oxygen