| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cast Shop Technology
|
| Presentation Title |
Assessment of Separation and Agglomeration Tendency of Non-metallic Inclusions in an Electromagnetically Stirred Aluminum Melt |
| Author(s) |
Cong Li, Thien Dang, Mertol Gokelma, Sebastian Zimmermann, Jonas Mitterecker, Bernd Friedrich |
| On-Site Speaker (Planned) |
Cong Li |
| Abstract Scope |
Presence of non-metallic inclusions (NMIs) reduces surface quality and mechanical properties of aluminum products. The development of good NMIs removal practices relies on the understanding of inclusions behaviors with respect to separation and agglomeration particularly in the turbulent flow. In the scenario of electromagnetically induced recirculated turbulent flow, the concerned behaviors of inclusions with different sizes have rarely been investigated experimentally.
In the present study, reference materials were prepared with uniformly distributed NMIs (SiC and MgAl2O4) via an ultrasound-involved casting route. Reference materials were charged into an aluminum melt where turbulent flow was promoted via electromagnetic force. Microscopical analysis shows non-significant agglomeration tendency of SiC, MgAl2O4, and TiB2 inclusion. Time-weight filtration curve, PoDFA, and Spark Spectrometer results suggest a strong dependence of separation rate on particle size. Analytical models were established to estimate collision rate of particles and to compare separation rate difference of different sized particles. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Pyrometallurgy, Aluminum, Characterization |