| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Defects and Properties of Cast Metals IV
|
| Presentation Title |
Porosity Formation in High Pressure Die Casting: Experiments and Simulations |
| Author(s) |
Nicole Trometer, Xuejun Huang, Michael Moodispaw, Jianyue Zhang, Alan A. Luo |
| On-Site Speaker (Planned) |
Alan A. Luo |
| Abstract Scope |
Porosity formation in high pressure die casting (HPDC) of aluminum and magnesium alloys is very complex, and is related to many factors such as entrapped air, dissolved gases and alloy shrinkage during solidification. This talk will present our recent experimental and computational investigations of porosity formation during HPDC. Water analog experiments were conducted to validate the effect of vacuum on flow and air entrainment, and compared to process simulation by ProCAST. A three-dimensional cellular automaton was developed to predict solidification microstructure and microporosity evolution during casting. HPDC experiments were carried out on two aluminum alloys at three vacuum levels. The porosity in HPDC samples was characterized using metallography, density measurements, computed tomography (CT) and micro-CT scanning. The decrease in porosity in vacuum die casting was in agreement with simulations. Finally, the porosity was related to the mechanical properties of die cast alloys in various vacuum levels. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Solidification, Aluminum, ICME |