| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cast Shop Technology
|
| Presentation Title |
Numerical Analysis of Channel-type Segregations in DC Casting Aluminum Slab |
| Author(s) |
Keisuke Kamiya, Takuya Yamamoto |
| On-Site Speaker (Planned) |
Keisuke Kamiya |
| Abstract Scope |
In the direct chill casting of aluminum alloys, segregation of the solute concentration are formed in the slab. It has been observed the negative segregation in the center of the slab and stripe type segregation called channel segregation in middle of one. These segregations will be a cause of variation in the mechanical and chemical properties of the final product, therefore have to be controlled. But the mechanism of its formation is not clear, and the casting conditions under which the segregation is minimized have not been established. In this study, a numerical simulation model for segregation has been developed and the segregation distribution in the Al-Mg alloy slab was numerically analyzed. As a result, the segregation similar to that observed in actual slabs was reproduced on numerical analysis. This analysis showed that the channel-type segregation could be suppressed by colliding the strong down flow against to the solidification interface. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Process Technology, Solidification |