Abstract
In industrial casting processes microstructure plays a major role in determining the properties of the final cast product. Columnar to equiaxed transition (CET) is a frequent result of the evolving grain structure during alloy solidification. In this contribution, we analyze CET in directional solidification via numerical simulations. The numerical model employs front tracking to track columnar growth and a volume average approach to account for the evolution of the equiaxed zone. The effects of gravity, thermal natural convection and dendrite transport were integrated into the model. Simulations of vertical directional solidification of an Al-7%wt.Si alloy both in and opposite the direction of gravity were conducted for different cooling conditions. Here, we present a preliminary analysis of these numerical simulations and a comparison of the predictions with previously published theoretical and experimental work.
| Original language | English |
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| Title of host publication | Shape Casting: 4th International Symposium 2011 in Honor of Prof. John T. Berry - Held During the TMS 2011 Annual Meeting and Exhibition |
| Editors | Murat Tiryakioglu, John Campbell, Paul N. Crepeau |
| Place of Publication | Hoboken |
| Publisher | John Wiley & Sons Ltd |
| Pages | 129-136 |
| Number of pages | 8 |
| ISBN (Print) | 9781118029374 |
| Publication status | Published - 2011 |
| Event | Shape Casting: 4th International Symposium 2011 in Honor of Prof. John T. Berry - Held During the TMS 2011 Annual Meeting and Exhibition - San Diego, United States Duration: 27 Feb 2011 → 3 Mar 2011 |
Conference
| Conference | Shape Casting: 4th International Symposium 2011 in Honor of Prof. John T. Berry - Held During the TMS 2011 Annual Meeting and Exhibition |
|---|---|
| Country/Territory | United States |
| City | San Diego |
| Period | 27/02/11 → 3/03/11 |
Keywords
- CET
- Grain transport
- Solidification