Microstructure evolution during hot deformation and dynamic transformation of Ti-5Al-3.3Sn-3.7Zr-0.6Ta-0.5W alloy in <i>α</i> + <i>β</i> two-phase region

LIU Yufei; ZHANG Ying; CHEN Zhiying; WANG Xiang

doi:10.12299/jsues.24-0097

Volume 39 Issue 2

Jun. 2025

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Article Navigation > Journal of Shanghai University of Engineering Science > 2025 > 39(2): 157-165

LIU Yufei, ZHANG Ying, CHEN Zhiying, WANG Xiang. Microstructure evolution during hot deformation and dynamic transformation of Ti-5Al-3.3Sn-3.7Zr-0.6Ta-0.5W alloy in α + β two-phase region[J]. Journal of Shanghai University of Engineering Science, 2025, 39(2): 157-165. doi: 10.12299/jsues.24-0097

Citation:

LIU Yufei, ZHANG Ying, CHEN Zhiying, WANG Xiang. Microstructure evolution during hot deformation and dynamic transformation of Ti-5Al-3.3Sn-3.7Zr-0.6Ta-0.5W alloy in α + β two-phase region[J]. Journal of Shanghai University of Engineering Science, 2025, 39(2): 157-165. doi: 10.12299/jsues.24-0097

Citation:

LIU Yufei, ZHANG Ying, CHEN Zhiying, WANG Xiang. Microstructure evolution during hot deformation and dynamic transformation of Ti-5Al-3.3Sn-3.7Zr-0.6Ta-0.5W alloy in α + β two-phase region[J]. Journal of Shanghai University of Engineering Science, 2025, 39(2): 157-165. doi: 10.12299/jsues.24-0097

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Microstructure evolution during hot deformation and dynamic transformation of Ti-5Al-3.3Sn-3.7Zr-0.6Ta-0.5W alloy in α + β two-phase region

doi: 10.12299/jsues.24-0097

a.
School of Materials Science and Engineering
b.
School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China

Received Date: 2024-03-31
Available Online: 2025-09-30
Publish Date: 2025-06-30

Abstract

Abstract

The rheological behavior and microstructure evolution of the new near-α titanium alloy under different deformation conditions were investigated by thermal compression tests and microstructure characterization experiments. The results show that the real stress-strain curve displays characteristics of stress decrease and tendency to stabilize after the peak. At high strain rates, the peak stress is high and decreases rapidly. The transformation of the hard-oriented α phase to the soft-oriented β phase leads to a rapid decrease in the flow stress, with dynamic recrystallization (DRX) refining grains and dynamic recovery (DRV) rearranging dislocations within subgrains. Based on these findings, a dynamic recrystallization volume fraction model was established.
- near-α titanium alloy,
- dynamic transformation (DT),
- volume fraction model,
- dynamic recovery (DRV)

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References(20)

References

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