Effect of heat treatment process on the structure and properties of deformed TiAl sheets

Guo Jie; Teng Aijun; Huang Zhaokuo; Zhong Yong; Yang Liu

doi:10.7513/j.issn.1004-7638.2024.02.009

Volume 45 Issue 2

Feb. 2024

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Guo Jie, Teng Aijun, Huang Zhaokuo, Zhong Yong, Yang Liu. Effect of heat treatment process on the structure and properties of deformed TiAl sheets[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(2): 58-62. doi: 10.7513/j.issn.1004-7638.2024.02.009

Citation:

Guo Jie, Teng Aijun, Huang Zhaokuo, Zhong Yong, Yang Liu. Effect of heat treatment process on the structure and properties of deformed TiAl sheets[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(2): 58-62. doi: 10.7513/j.issn.1004-7638.2024.02.009

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Effect of heat treatment process on the structure and properties of deformed TiAl sheets

doi: 10.7513/j.issn.1004-7638.2024.02.009

1.
Vanadium Titanium Research Institute, Ansteel Beijing Research Institute Co., Ltd., Beijing 102200, China
2.
Chengdu Advanced Metallic Materials Industry Technology Research Institute Co., Ltd., Chengdu 610300, Sichuan, China

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Received Date: 2023-06-28
Available Online: 2024-04-30
Publish Date: 2024-04-30

Abstract

Abstract

TiAl based intermetallic compounds have attracted widespread attention of domestic to international researches due to their lightweight, high specific strength, and excellent high-temperature performance, and have been applied in key fields such as aerospace and aviation, etc. However, due to their inherent characteristics, their practical application has been greatly limited. By exploring the heat treatment process in different phase zones and selecting appropriate heat treatment parameters, combined with the analysis of room temperature mechanical properties and high-temperature mechanical properties of TiAl compounds, it is found that the tensile strength and yield strength of specimens gradually increase as the heat treatment temperature increases. The optimal elongation is obtained by heat treatment in the (α+β) phase zone. Further observation and analysis of the microstructure and fracture morphology of samples tested at room and high temperatures were conducted to determine the crack propagation mode and fracture mechanism. Finally, the mechanical properties were optimized after heat-treated at the solution temperature of 1 370 ℃.
- TiAl alloy,
- heat treatment process,
- structure,
- mechanical properties,
- cracking,
- fracture morphology

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References(7)

References

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