The coupled thermal-plastic behavior of TC11 titanium alloy

CHEN Junhong; YIN Biao; XU Weifang; ZHANG Fangju; XIE Ruoze

doi:10.11883/bzycj-2023-0228

Volume 44 Issue 5

May 2024

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CHEN Junhong, YIN Biao, XU Weifang, ZHANG Fangju, XIE Ruoze. The coupled thermal-plastic behavior of TC11 titanium alloy[J]. Explosion And Shock Waves, 2024, 44(5): 053101. doi: 10.11883/bzycj-2023-0228

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CHEN Junhong, YIN Biao, XU Weifang, ZHANG Fangju, XIE Ruoze. The coupled thermal-plastic behavior of TC11 titanium alloy[J]. Explosion And Shock Waves, 2024, 44(5): 053101. doi: 10.11883/bzycj-2023-0228

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The coupled thermal-plastic behavior of TC11 titanium alloy

doi: 10.11883/bzycj-2023-0228

Institute of System Engineering, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

Received Date: 2023-06-29
Rev Recd Date: 2023-12-11

Available Online: 2024-02-29

Publish Date: 2024-05-08

Abstract

Abstract

Understanding the role of temperature rise in dynamic shear is of great significant, as it helps us to predict accurately the dynamic failure of materials and structures. In order to obtain the temperature rise and the distribution of temperature in the shear zone of TC11 titanium alloy, dynamic shear tests were conducted on the “flat-hat” shaped specimens of TC11 titanium alloy by using a split Hopkinson pressure bar. Based the high-speed infrared InSb detecting technology, the evolution of temperature rise in the shear zone with time was obtained. Theoretical analysis of the distribution of temperature rise in the shear zone with time and space is carried out by solving the one dimensional thermal conduction equation. The initiation and propagation of shear band and the relative distribution of temperature fields in the shear zone are obtained by FEM simulation analysis. It was found from the experimental results that the TC11 titanium alloy behaves brittlely under dynamic shearing. The fracture morphologies demonstrate that significant temperature rise occurs during dynamic shearing. The temperature rise test results demonstrate that the maximal temperature rise in the shear zone achieved 430 ℃. Furthermore, the loading rate plays insignificant effect on the temperature rise in the shear zone. The temperature rise in the shear zone is highly localized, the significant temperature rise distributes several micro-meters around the center of the shear zone, and the significant temperature rise maintains several tens of micro-seconds. The results of the theoretical analysis and FEM simulation demonstrate that the maximal temperature rise can achieve 751 ℃, and the distribution laws of the temperature are consistent with the experimental results. It is found from the experimental and FEM simulation results that the maximum temperature rise occurs at the time of failing of material, indicating that the temperature rise in the shear zone results from the highly localized shear deformation.
- dynamic shear,
- titanium alloy,
- temperature rise,
- thermal conduction,
- split Hopkinson pressure bar

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References(23)

References

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