Abstract
The simulation of the solidification transport process of TiAl alloy blade-like casting with a solidification shrinkage under the different transverse magnetic fields (0∼11T) was carried out. The results show that although the liquid flow in bulk liquid region can be suppressed efficiently, the feeding flow in the mushy zone caused by the solidification shrinkage/contraction can not be suppressed even under the ultra-strong magnetic field of 11T, which indicates that the driven force of the feeding flow by the volume shrinkage is much stronger than that caused by the gravity. The natural convection can delay the directional solidification process, while the static magnetic field accelerates it to some extent by weakening the natural convection and changes the heat and mass transfer to a diffusion type. The natural convection can lead to horizontal segregation.
| Original language | English |
|---|---|
| Pages (from-to) | 175 |
| Number of pages | 1 |
| Journal | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
| Volume | 34 |
| Issue number | SUPPL. 3 |
| State | Published - Oct 2005 |
| Externally published | Yes |
Keywords
- Electromagnetic braking
- Liquid flow
- Solidification shrinkage
- TiAl alloy
- Ultra-strong static magnetic field
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