摘要
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.
| 源语言 | 英语 |
|---|---|
| 页（从-至） | 155-158 |
| 页数 | 4 |
| 期刊 | Solid State Phenomena |
| 卷 | 116-117 |
| DOI | |
| 出版状态 | 已出版 - 2006 |