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Aging of titanium and low-alloy α-alloy under the influence of hydrogen

Conclusions

  1. 1.

    Commercially pure titanium and low-alloy α-alloy PT-7M with a hydrogen content above the solubility limit at 20°C is inclined towards aging, i.e., a reduction in impact strength during storage. Aging is due to separation of titanium hydride in the structure and it occurs more rapidly, the more hydrogen in the alloy.

  2. 2.

    A basic method for removing hydrogen aging and stabilizing impact strength is degassing the alloy by heat treatment in a vacuum.

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Literature cited

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    R. J. Jaffee, G. A. Lenning, and C. J. Craighead, J. Met.,8, Sec. 2, 907 (1956).

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    L. S. Moroz, B. B. Chechulin, I. V. Polin, et al., Titanium and Its Alloys [in Russian], Vol. 1, Sudpromgiz, Leningrad (1960).

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    V. A. Ivanov, A. A. Bukhanova, and B. A. Kolachev, Hydrogen in Titanium [in Russian], Metallurgizdat, Moscow (1962).

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    W. Köster et al., Z. Metallkunde,47, No. 8, 564 (1956).

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    L. W. Berger et al., J. Met.,212, No. 4, 509 (1956).

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Additional information

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 3, pp. 46–48, March, 1989.

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Syshchikov, V.I., Kolodkina, G.I. & Chechulin, B.B. Aging of titanium and low-alloy α-alloy under the influence of hydrogen. Met Sci Heat Treat 31, 219–222 (1989). https://doi.org/10.1007/BF00715832

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Keywords

  • Hydrogen
  • Titanium
  • Heat Treatment
  • Hydride
  • Impact Strength