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Superplastic deformation — A method of improving the mechanical properties of titanium alloys

  • Titanium and Its Alloys
  • Published:
Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    The mechanical properties of alloy VT9 after deformation under conditions of superplasticity are not inferior to the properties of alloys after HTMT. The ultimate tensile strength, fatigue limit, and fracture toughness are higher than after the standard treatment.

  2. 2.

    Deformation of alloy VT9 under conditions of superplasticity makes it possible to shorten the process, excluding the holding time during heating before deformation and annealing. Deviations from the optimal conditions of superplasticity with use of the shortened heat treatment lead to an increase of the strength, but the ductility decreases and the thermal stability of the alloy is also impaired.

  3. 3.

    Superplastic deformation practically eliminates the structural and chemical heterogeneity of the alloy and increases the evenness of the mechanical properties through the section of the piece.

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Literature cited

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Authors
  1. O. A. Kaibyshev
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  2. G. A. Salishchev
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Additional information

Ordzhonikidze Ufa Aviation Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 12, pp. 26–28, December, 1979.

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Kaibyshev, O.A., Salishchev, G.A. Superplastic deformation — A method of improving the mechanical properties of titanium alloys. Met Sci Heat Treat 21, 924–927 (1979). https://doi.org/10.1007/BF00706628

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  • DOI: https://doi.org/10.1007/BF00706628

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