Hot compressive deformation behaviour and microstructural variation of TA15 titanium alloy

Wang, Y.; Zhu, Jingchuan; Lai, Zhao-Rong; Cao, Xueyu

doi:10.1179/174328405x71756

Cited by 11 publications

(5 citation statements)

References 13 publications

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“…TA15 titanium alloy with a nominal composition of Ti-6Al-2Zr-1Mo-1V, is developed on the basis of Russia alloy BT20 [1]. As a classic near a titanium alloy, TA15 is an ideal high-temperature alloy since it combines the excellent creep behavior of a titanium alloys with the high strength of a + b titanium alloys [2].…”

Section: Introductionmentioning

confidence: 99%

An experimental study of deformation mechanism and microstructure evolution during hot deformation of Ti–6Al–2Zr–1Mo–1V alloy

Zhu

Lai

et al. 2013

Materials & Design (1980-2015)

102

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a b s t r a c tIsothermal tensile tests have been performed to study the deformation mechanisms and microstructure evolution of Ti-6Al-2Zr-1Mo-1V titanium alloy in the temperature range 750-850°C and strain rate range 0.001-0.1 s À1. The deformation activations have been calculated based on kinetics rate equation to investigate the hot deformation mechanism. Microstructures of deformed samples have been analyzed by electron backscatter diffraction (EBSD) to evaluate the influences of hot deformation parameters on the microstructure evolution and recrystallization mechanism. The results indicate that deformation mechanisms vary with deformation conditions: at medium (800°C) and high (850°C) temperature, the deformation is mainly controlled by the mechanisms of dislocation creep and self-diffusion, respectively. The microstructure globularization mechanisms also depend on deformation temperature: in the temperature range from 750 to 800°C, the high angle grain boundaries are mainly formed via dislocation accumulation or subgrain boundaries sliding and subgrains rotation; while at high temperature of 850°C, recrystallization is the dominant mechanism. Especially, the evolution of the recrystallization mechanism with the deformation temperature is first observed and investigated in TA15 titanium alloy.

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Section: Introductionmentioning

confidence: 99%

An experimental study of deformation mechanism and microstructure evolution during hot deformation of Ti–6Al–2Zr–1Mo–1V alloy

Zhu

Lai

et al. 2013

Materials & Design (1980-2015)

102

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“…Fig.13. Comparison of thickness(mm) for part produced through SPF using experimental pressure profile vs FE-simulation for same experimental pressure profile (a) Thickness Profile (b)Thickness close to the corner and center(labeled as point 1,2,3,4,5,6,7,8) of the corresponding boxes.…”

Section: Fea Simulation Resultsmentioning

confidence: 99%

“…TA15 (Ti-6Al-2Zr-1Mo-1V) is a type of near-α titanium alloy and is famous for its application in aerospace industry because of their high strength to mass ratio, high weldability, superior creep, and their ability to retain its mechanical properties at high temperatures up to 550 °C [2]. However, the low plasticity and narrow processing window (i-e high flow stress at elevated temperatures) of TA15 makes it difficult to deform and process.…”

Section: Introductionmentioning

confidence: 99%

Constitutive modeling for the simulation of the superplastic forming of TA15 titanium alloy

Yasmeen

Shao

Zhao

et al. 2019

International Journal of Mechanical Sciences

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“…TA15 titanium alloy is developed on the basis of Russian BT20 alloy [1], which belongs to a high--alumina near-alpha titanium alloy with β-stable elements such as Mo and V. It has the advantages of high strength-to-weight ratio, excellent creep and erosion resistance, excellent high-temperature mechanical properties and welding properties, and has been widely used in the aerospace industry as a key weighing component of aircraft [2], for example, high-stress parts of aero-engines, frames, compressor blades, and turbine blades, Xu et al [3]. At present, experts, scholars, and research institutions in various countries have conducted a lot of research on the high--temperature deformation mechanism, microstructure evolution, mechanical properties of TA15 titanium alloy, and other factors affecting the application of the *Corresponding author: e-mail address: 2014247@tyust.edu.cn **Corresponding author: e-mail address: fanjiaxin686@163.com material.…”

Section: Introductionmentioning

confidence: 99%

Study of high-temperature deformation behavior and thermal processing diagram of cast TA15 titanium alloy

Zhu,

Huang,

Fan

et al. 2023

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In this study, the high-temperature deformation behavior of cast TA15 titanium alloy was investigated by thermal simulation compression experiments. The heat deformation temperatures ranged from 1323 to 1473 K, and the strain rates were 0.1, 1.0, and 10 s −1 . The results show that the softening mechanism of cast TA15 titanium alloy is mainly local plastic flow when deformed at a high strain rate (ε = 10 s −1 ); at a low strain rate (ε ≤ 1.0 s −1 ), it is mainly dynamic reversion and dynamic recrystallization. The developed constitutive equation that takes into account the effects of strain can accurately describe the rheological behavior of TA15 alloy over the entire stress range. The correlation coefficient r of 0.95637 and the average relative error ARE of 6.45 % were calculated between the flow stress values of the alloy during thermal deformation and the calculated values of the model, indicating that the model constructed in this study is more accurate. The optimal high-temperature deformation processing window was obtained using the thermal processing diagram and combined with the microstructure of the deformed specimens: deformation temperature 1373-1423 K and strain rate 0.1-1.0 s −1 . K e y w o r d s : cast TA15 titanium alloy, high-temperature deformation behavior, constitutive model, thermal processing diagram

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Hot compressive deformation behaviour and microstructural variation of TA15 titanium alloy

Cited by 11 publications

References 13 publications

An experimental study of deformation mechanism and microstructure evolution during hot deformation of Ti–6Al–2Zr–1Mo–1V alloy

An experimental study of deformation mechanism and microstructure evolution during hot deformation of Ti–6Al–2Zr–1Mo–1V alloy

Constitutive modeling for the simulation of the superplastic forming of TA15 titanium alloy

Study of high-temperature deformation behavior and thermal processing diagram of cast TA15 titanium alloy

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