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


  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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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).

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