| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture: Towards Accurate Prediction
|
| Presentation Title |
Hybrid Additive Manufacturing of Ti-6Al-4V for Enhanced High-Cycle Fatigue Performance |
| Author(s) |
Xinni Tian, Kai Zhang, Aijun Huang, Yuman Zhu, Xinhua Wu |
| On-Site Speaker (Planned) |
Xinni Tian |
| Abstract Scope |
This study explores a hybrid additive manufacturing (AM) technique combining direct energy deposition (DED) with in-situ rolling to enhance the high cycle fatigue (HCF) performance of Ti-6Al-4V. The hybrid method effectively reduces porosity and refines grain structure, resulting in a 40% improvement in fatigue strength compared to conventional DED. High cycle fatigue testing and microstructural analyses reveal significant reductions in pore density and increased resistance to crack propagation in hybrid DED samples. The influence of porosity and refined prior-beta grains were discussed. This innovative technique offers a promising approach to producing Ti-6Al-4V components with superior HCF properties, making it highly beneficial for aerospace and other high-performance applications. The study demonstrates the potential of hybrid AM to overcome common limitations of traditional methods, providing enhanced material performance and expanding the applicability of AM in critical industries. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, Other |