Rheological Behavior of a VT23 Alloy during Deformation in a Wide Temperature Range

Gladkovsky, S. V.; Волков, В. П.; Salikhyanov, D. R.; Veselova, V. E.; Пацелов, А. М.

doi:10.1134/s0036029520100079

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…VT23 titanium alloy (average grade composition is Ti-5.45 Al-4.7 V-2.45 Mo-1.1 Cr-0.7 Fe, wt. %) refers to deformable, thermally hardened, moderately alloyed α+β-titanium alloys of martensitic class possessing good technological plasticity [1,2]. Complex alloying with both isomorphic (V, Mo) and eutectoid-forming (Cr, Fe) β-stabilizers provides a favorable combination of strength, ductility and impact toughness, [3], weldability [4] with the opportunity of obtaining welded joints with other titanium alloys [5] and steel [6].…”

Section: Introductionmentioning

confidence: 99%

Evolution of Phase Composition and Thermal Expansion during Heating of VT23 Titanium Alloy

Vodolazskiy

Илларионов

Рыжков

2022

MSF

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Changes in thermal expansion during heating of hot-extruded tube made of VT23 titanium alloy (Ti-5.45 Al-4.7 V-2.45 Mo-1.1 Cr-0.7 Fe, wt. %) were analyzed. The volume effect of α→β-transformation, β-transus temperature as well as the volume fraction of α-and β-phase formed during heating were calculated based on the received data of dilatometric analysis. Results obtained were compared to thermodynamic calculations and published data. The change in the CTE value of VT23 alloy upon heating to 975 °C was estimated, and the explanation of different CTE values obtained in the present study and published data was proposed.

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Section: Introductionmentioning

confidence: 99%

Evolution of Phase Composition and Thermal Expansion during Heating of VT23 Titanium Alloy

Vodolazskiy

Илларионов

Рыжков

2022

MSF

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Plastic Anisotropy Effect on Variation of Mechanical and Structural Properties of VT23 Titanium Alloy Subjected to Impact-Oscillatory Loading

et al. 2022

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The main regularities in the impact of varying intensity impact-oscillatory loading on the variation of the mechanical and structural properties of the VT23 high-strength two-phase transverse-rolled sheet titanium alloy have been found. The intensity of the impulse introduction of energy into the alloy under the dynamic non-equilibrium process (DNP) was estimated by εimp (the increment of dynamic strain). The pulse intensity was found to change the shape of the static strain diagram with further tensioning, as compared to the initial state. This indicates the effect from the structure self-organization inherent in the VT23 titanium alloy upon the DNP. After the DNP (εimp = 1.44%), with further static deformation, the tensile diagram revealed yield sites up to 6.5% long. In most cases, the DNP was found to have a negative effect on the variation of the mechanical properties of the VT23 titanium alloy, especially if the latter was rolled in the transverse direction. The optimal DNP intensity is εimp~1.5%. In this case, the DNP can be used as an effective plasticization technology for the VT23 titanium alloy (regardless of the rolling direction) in the stamping of high-strength titanium alloys. Changes in the mechanical and structural condition of the VT23 titanium alloy subjected to the DNP were confirmed by the fractographic investigation of specimen fractures.

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Cryogenic Investigations into the Effect of Impact-Oscillatory Loading on Changes in the Mechanical Properties and Structural Condition of VT23M Two-Phase Titanium Alloy

Chausov,

Hutsaylyuk,

Maruschak

et al. 2024

Materials

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Impact-oscillatory loading of variable intensity was applied to the VT23M high-strength sheet two-phase titanium alloy in liquid nitrogen. This was carried out to investigate the effect of this loading type on changes in the mechanical properties and structural condition of the alloy upon subsequent static tensioning at normal temperature. Dynamic non-equilibrium process (DNP) realized at a temperature of liquid nitrogen proved to be unable to impair the strength properties of the VT23M titanium alloy compared to room temperature; however, they caused a significant decrease in ductility (down to 16%). The impaired plastic properties of the alloy were shown to entail additional defects in the structural components of the alloy. The authors have found patterns of damage accumulation in the structural components of the alloy depending on the DNP parameters. They are in good agreement with the findings of the fractographic research.

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Rheological Behavior of a VT23 Alloy during Deformation in a Wide Temperature Range

Cited by 3 publications

References 10 publications

Evolution of Phase Composition and Thermal Expansion during Heating of VT23 Titanium Alloy

Evolution of Phase Composition and Thermal Expansion during Heating of VT23 Titanium Alloy

Plastic Anisotropy Effect on Variation of Mechanical and Structural Properties of VT23 Titanium Alloy Subjected to Impact-Oscillatory Loading

Cryogenic Investigations into the Effect of Impact-Oscillatory Loading on Changes in the Mechanical Properties and Structural Condition of VT23M Two-Phase Titanium Alloy

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