| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Defects and Properties of Cast Metals
|
| Presentation Title |
X-ray Imaging of Die-shape Effects on Defect Formation During Pressurised Casting |
| Author(s) |
Shishira Bhagavath, Utkarsh Godwal, Sebastian Marussi, Shashidhara Marathe, Mei Li, Bita Ghaffari, Chu Lun Alex Leung , Peter D Lee, Shyamprasad Karagadde |
| On-Site Speaker (Planned) |
Shishira Bhagavath |
| Abstract Scope |
High Pressure Die Casting (HPDC) is a manufacturing process in which molten metal is injected into a metal die cavity under high pressure and solidified in a span of a few seconds. The properties of HPDC components may be reduced by defects including shear bands and porosity, the origin of which can be traced to the interaction of metal flow and solidification during HPDC. We systematically investigated the influence of semi-solid metal flow on eutectic and porosity band formation in different model die geometries using synchrotron X-ray imaging. The in situ observations, along with post-process chemical and porosity characterisations, provided insights into formation of these microstructural features. These observations were coupled to numerical simulations of industrial components to correlate the effects of localised flow behaviour on defect formation, with bulk flow. The findings are being integrated into geometry informed machine learning porosity predictions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Solidification, Process Technology |