| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys: Development and Manufacturing
|
| Presentation Title |
Rapid Investment Casting of Nano-Treated Aluminum Alloy 7075 Turbines |
| Author(s) |
Guan-Cheng Chen, Till Felix Reufsteck, Yitian Chi, Xiaochun Li |
| On-Site Speaker (Planned) |
Guan-Cheng Chen |
| Abstract Scope |
Aluminum alloy 7075 is renowned for its lightweight and excellent mechanical properties, making it ideal for high-performance aerospace applications. However, challenges such as hot cracking and poor fluidity hinder the casting of complex components out of AA7075, especially thin and intricate ones. This study applies a new metallurgical method, nano-treating, where a small fraction of TiC nanoparticles is dispersed to AA7075 alloy to enable novel microstructural and solidification control. A vacuum fluidity test showed that nano-treating increased the fluidity of AA7075, eliminated hot cracking, and enhanced surface quality. With the nanotechnology-enhanced castability, a turbine structure with thin fins of 0.5 mm thick was manufactured out of the nano-treated aluminum alloy 7075 via the rapid investment casting process. However, the untreated AA7075 alloy exhibited poor fillings and severe cracks. The casting results underscore the potential of nano-treating technology in enabling traditionally uncastable alloys for complex thin-wall structures for numerous applications. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Nanotechnology, Aluminum, Solidification |