Adiabatic shear sensitivity performance of Ti-1023 alloys at different heat treatment regimes

Guo Wenjing; Zhang Jilin; Jia Haishen; Yi Xiangbin; Luo Wencui

doi:10.7513/j.issn.1004-7638.2024.01.011

Volume 45 Issue 1

Feb. 2024

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Guo Wenjing, Zhang Jilin, Jia Haishen, Yi Xiangbin, Luo Wencui. Adiabatic shear sensitivity performance of Ti-1023 alloys at different heat treatment regimes[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(1): 71-77. doi: 10.7513/j.issn.1004-7638.2024.01.011

Citation:

Guo Wenjing, Zhang Jilin, Jia Haishen, Yi Xiangbin, Luo Wencui. Adiabatic shear sensitivity performance of Ti-1023 alloys at different heat treatment regimes[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(1): 71-77. doi: 10.7513/j.issn.1004-7638.2024.01.011

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Adiabatic shear sensitivity performance of Ti-1023 alloys at different heat treatment regimes

doi: 10.7513/j.issn.1004-7638.2024.01.011

Guo Wenjing^1
,,
Zhang Jilin^{2
,
,},
Jia Haishen¹,
Yi Xiangbin^{1, 2},
Luo Wencui^{1, 2}

1.
Key Laboratory of Green Cutting Technology and Application in Gansu Province, Lanzhou Institute of Technology, Lanzhou 730050, Gansu, China
2.
Precision Machining Technology and Equipment Engineering Research Center of Gansu Province, Lanzhou Institute of Technology, Lanzhou 730050, Gansu, China

Received Date: 2023-08-22
Publish Date: 2024-02-01

Abstract

Abstract

Using the Hopkinson pressure bar test system to conduct room temperature dynamic compression experiments for cylindrical samples, the formation characteristics of adiabatic shear bands and the microstructure of Ti-1023 titanium alloy under different heat treatment regimes were studied. The results show that the grain size of Ti-1023 alloy is increased by the solid solution treatment above the phase transition point. The fine acicular α phase precipitates at the β grain boundary. The solid solution aging below the phase transition point causes a large number of spherical α phases in the grains, and the grain size of the tissue grains with dual aging treatment is even smaller. Under the loading conditions of different strain rates, all different tissues show obvious strain rate enhancement and plasticizing effect, reflecting apparent characteristics of thermoplastic instability. The dynamic strength of the solid solution aging group above the phase transition point was the highest, but the plastic difference was the worst and being presented with the greatest adiabatic shear sensitivity. It is the most difficult to produce adiabatic shear in the solid solution single aging structures below the phase transition point, but the material strength is low. The solid solution dual aging tissue has higher dynamic strength and better plasticity than the solid solution single heavy aging tissue,which has the best resistance to impact bearing capacity.
- Ti-1023 titanium alloy,
- solution and aging,
- mechanical properties,
- microstructure,
- adiabatic shear

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References(18)

References

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