The effect of annealing temperature on the grain structure and microhardness values of the V–4Ti–4Cr alloy after thermomechanical treatment with rolling has been investigated. The specificity of the change in the texture of the V–4Ti–4Cr alloy with an increase in the annealing temperature was studied by x-ray diffraction analysis. Based on the EBSD analysis data, changes in the grain structure after annealing at different temperatures were revealed. The temperature intervals for the implementation of the main processes of relaxation and recrystallization of the alloy under study were revealed. The microband (layered) structural state formed after the rolling stage is characterized by a rolling texture of the {100}<110> type which is stable up to a temperature of 700°C at which partial recovery begins with relaxation of the most defective areas. At 800°C, primary recrystallization processes are activated, which at 900°C cover the entire volume of the material. An equilibrium structural state with no rolling texture is formed after annealing at 1000°C. Secondary recrystallization processes are activated at 1300°C. With an increase in the annealing temperature from 700 to 900°C, the microhardness decreases from 2.3 to 1.75 GPa. No nonequilibrium solid solutions of interstitial atoms were found in the entire annealing temperature range.
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Smirnov, I.V., Ditenberg, I.A., Grinyaev, K.V. et al. Influence of the Annealing Temperature on the Grain Structure of V–4Ti–4Cr Alloy after Thermomechanical Treatment with Rolling. Russ Phys J 65, 2231–2237 (2023). https://doi.org/10.1007/s11182-023-02895-3
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DOI: https://doi.org/10.1007/s11182-023-02895-3