Study on the hot-deformation behavior and hot processing map of Ti551 alloy

SHEN Ziyang; DENG Jiadong; QIAN Dongsheng; DING Zuojun; LIU Chao

doi:10.7513/j.issn.1004-7638.2026.02.010

Volume 47 Issue 2

Apr. 2026

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SHEN Ziyang, DENG Jiadong, QIAN Dongsheng, DING Zuojun, LIU Chao. Study on the hot-deformation behavior and hot processing map of Ti551 alloy[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(2): 78-87. doi: 10.7513/j.issn.1004-7638.2026.02.010

Citation:

SHEN Ziyang, DENG Jiadong, QIAN Dongsheng, DING Zuojun, LIU Chao. Study on the hot-deformation behavior and hot processing map of Ti551 alloy[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(2): 78-87. doi: 10.7513/j.issn.1004-7638.2026.02.010

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Study on the hot-deformation behavior and hot processing map of Ti551 alloy

doi: 10.7513/j.issn.1004-7638.2026.02.010

SHEN Ziyang^{1, 2
,},
DENG Jiadong^{1, 2, 3
,
,},
QIAN Dongsheng^{1, 2, 3},
DING Zuojun⁴,
LIU Chao⁴

1.
State Key Laboratory of Light Superalloys, Wuhan University of Technology, Wuhan 430070, Hubei, China
2.
Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan 430070, Hubei, China
3.
Hubei Engineering Technology Research Center for Green Precision Material Forming, Wuhan University of Technology, Wuhan 430070, Hubei, China
4.
Wuxi Paike New Materials Technology Co., Ltd., Wuxi 214100, Jiangsu, China

More Information

Received Date: 2025-01-21
Accepted Date: 2026-02-27
Rev Recd Date: 2026-02-08

Available Online: 2026-04-29

Publish Date: 2026-04-29

Abstract

Abstract

To investigate the hot deformation behavior of Ti551 titanium alloy, isothermal compression tests were conducted at temperatures ranging from 800 ℃ to 950 ℃ and strain rates between 0.01–1 s⁻¹. Based on the true stress–true strain data, the hot deformation characteristics of Ti551 titanium alloy were systematically analyzed. The results indicate that the flow stress of the Ti551 titanium alloy is highly sensitive to variations in temperature and strain rate. An Arrhenius-type constitutive model incorporating strain compensation was established to describe the hot deformation behavior of the alloy, and the predictive capability of the model was evaluated. Furthermore, processing maps were constructed using the Prasad instability criterion, revealing the distribution characteristics of power dissipation efficiency and instability domains as functions of temperature and strain rate. The optimal hot processing window for the Ti551 titanium alloy was identified as the high-temperature and low-to-medium strain rate region, while potential flow instability regions were located in the low-temperature and high strain rate domain. In addition, the evolution of primary α-phase morphology and the variation in the α/β phase fraction under different deformation conditions were investigated. These results provide a theoretical basis for the design of hot working process parameters and the microstructure–property optimization of Ti551 titanium alloy.
- Ti551 titanium alloy,
- hot compression test,
- constitutive equation,
- hot processing map,
- hot deformation behavior

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References(14)

References

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