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Effect of supplementary alloying of titanium alloy VT23 on its phase composition and tendency to recrystallization

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

Conclusions

  1. 1.

    The supplementary alloying of the titanium VT23 (α+β)-alloy with 2–6% Zr and Sn lowers the recrystallization of the β-phase. Oxygen and carbon additives (0.1% each) suppress this process. Additives of ytterium and erbium (0.02% each) in the grade-composition alloy do not exert a pronounced influence on its tendency to recrystallization.

  2. 2.

    The texture of the β-phase in sheets 2 mm thick is nonuniform over the cross section after both rolling and annealing, and contains the (110) shear component in the layer at a distance of 1/4h from the surface, which is intensified as a function of alloying due to either dynamic recrystallization during rolling or static recrystallization during subsequent annealing. After rolling, the amount of (110)[001] texture ranges from 7 to 29% as a result of the nonuniform tendency of alloys with different additives to dynamic recrystallization. After static recrystallization during subsequent annealing, the volume fraction of this texture is equalized in all alloys investigated, and amounts to 20–36%.

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References

  1. A. I. Khorev, M. I. Ermolova, E. I. Gus'kova, et al., "Effect of heat-treatment regime on the mechanical properties and phase composition of alloy VT23,", in Alloying and Heat Treatment of Titanium Alloys [in Russian], Otd. Nauchn.-Tekh. Informats., Vses. Nauchn-Issled. Inst. Aviats. Mater., Moscow (1977), pp. 96–105.

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  2. Ya. D. Vishnyakov, A. A. Babaréko, S. A. Vladimirov, and I. V. Égiz, Theory of Texture Formation in Metals and Alloys [in Russian], Nauka, Moscow (1979).

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  3. I. V. Égiz, A. A. Babaréko, and V. N. Fedulov, "Effect of rolling and short-term annealing on the structure of alloy VT23,", Izv. Akad. Nauk SSSR. Met., No. 1, 161–166 (1991).

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  4. A. A. Babaréko, I. V. Égiz, and V. N. Fedulov, "Mechanism of the formation of high-band texture in titanium alloy VT23," Fiz. Met. Metalloved.,63, No. 3, 538–542 (1987).

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Authors
  1. A. A. Babaréko
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  2. I. V. Égiz
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  3. M. A. Khorev
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Additional information

A. A. Baikov Institute of Metallurgy; All-Union Scientific-Research Institute of Aviation Materials. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 2, pp. 37–39, February, 1993.

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Babaréko, A.A., Égiz, I.V. & Khorev, M.A. Effect of supplementary alloying of titanium alloy VT23 on its phase composition and tendency to recrystallization. Met Sci Heat Treat 35, 116–120 (1993). https://doi.org/10.1007/BF00773810

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