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Influence of Manufacturing and Heat Treatment Production Parameters on Structural-Phase Composition and Mechanical Properties of VT47 Alloy Rolled Thin Sheets

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It is shown that a set of production and mechanical properties of metastable β-titanium alloys make it possible to produce high-strength parts of a complex shape for aviation equipment. The influence of production regimes for manufacture and hardening heat treatment on structure and mechanical properties of thin-sheet rolled semi-finished products from metastable β-titanium alloy VT47 is studied. It is established that the degree of deformation during cold rolling of sheets due to occurrence of recrystallization processes upon heating to temperatures in the β-region does not significantly affect alloy mechanical properties in a heat treated condition. Varying the aging temperature makes it possible to control the combination of strength and ductility properties of VT47 alloy over a wide range.

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Notes

  1. Data for sheet stamping capacity of titanium alloys OT4 and OT4-1 provided for sheet with thickness more than 3 mm from production instruction PI 1.2.329-87 “Sheet stamping of titanium alloy components”.

  2. Handbook “Aircraft Materials.” Vol. 2. Corrosion-Resistant and Heat-Resistant Steels and Alloys [in Russian], ONTI, Moscow (1975).

  3. Study by transmission electron microscopy conducted by A. V. Zavodov.

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Authors and Affiliations

  1. All-Russian Scientific Research Institute of Aviation Materials, Kurchatov Institute National State Research Centre, Moscow, Russia

    M. S. Oglodkov, A. A. Shiryaev & N. A. Nochovnaya

Authors
  1. M. S. Oglodkov
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  2. A. A. Shiryaev
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  3. N. A. Nochovnaya
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Correspondence to M. S. Oglodkov.

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Translated from Metallurg, Vol. 67, No. 8, pp. 41–47, August, 2023.

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Oglodkov, M.S., Shiryaev, A.A. & Nochovnaya, N.A. Influence of Manufacturing and Heat Treatment Production Parameters on Structural-Phase Composition and Mechanical Properties of VT47 Alloy Rolled Thin Sheets. Metallurgist 67, 1118–1126 (2023). https://doi.org/10.1007/s11015-023-01603-3

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