Impact of Heat Treatment on TB18 Titanium Alloy
Author Information
Author(s): Tang Jiafeng, Luo Hengjun, Wu Biliu, Liu Wenhao, Rong Yu, Chen Danyang, Qin Yulin, Zhang Ning, Hao Fang, Deng Hao, Chen Longqing, Zhu Jun, Yin Ming, Frenzel Jan
Primary Institution: College of Physics, Sichuan University, Chengdu, China
Hypothesis
How does heat treatment affect the microstructure and mechanical properties of TB18 titanium alloy?
Conclusion
Heat treatment can refine the β-phase grain size, which reduces stress concentration and affects the alloy's strength and ductility.
Supporting Evidence
- Longer solution times increase the β grain size.
- Refining the β-phase grain size reduces stress concentration during tensile testing.
- The α phase precipitates most effectively at 530 °C.
- Strength changes minimally with solution time, but ductility decreases.
- The Hall-Petch relationship explains the strength and ductility variations.
Takeaway
This study shows that heating and cooling TB18 titanium alloy in specific ways can make it stronger and less likely to break.
Methodology
The TB18 alloy was solution-treated at 870 °C for 1 to 4 hours and aged at various temperatures to study the effects on microstructure and mechanical properties.
Digital Object Identifier (DOI)
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