Abstract
The solidification behavior of the semi-solid slurry with rapid shear-rate changes was investigated by using succinonitrile-5at.%water transparent alloy and Sn-15wt.%Pb alloy on a self-made apparatus. The results showed that the rapid changes of shear-rate improved the nucleation and promoted the globular growth of solidification microstructure in the stirred melt. The increase of shear-rate was in favor of promoting the grain growth with globular shape to a certain extent, however, when the shear-rate was beyond a critical value, the further increase of the shear-rate will lead the disappearance of the globular crystals. Thus, the microstructure of semi-solid processing could be refined by a controlled stirring process.
| Original language | English |
|---|---|
| Pages (from-to) | 155-158 |
| Number of pages | 4 |
| Journal | Solid State Phenomena |
| Volume | 116-117 |
| DOIs | |
| State | Published - 2006 |
Keywords
- Microstructure
- Semi-solid processing
- Shear