Abstract
A large number of sphere-like α phases have firstly been found in microstructure of semisolid hypereutectic Al-Si alloy prepared by electromagnetic stirring. The results of the experiments indicated that this kind of sphere-like α phases appeared above eutectic temperature 575°C, and it remained in the microstructure of semisolid hypereutectic Al-Si alloy reheated above eutectic temperature. Based on the experiment results and theoretical analysis, this kind of α phase nucleates through the mergence of similar solid aluminum atom clusters in hyper eutectic Al-Si alloy melt under the electromagnetic force and high pressure in some mini-zone of the semisolid melt caused by electromagnetic stirring.
| Original language | English |
|---|---|
| Pages (from-to) | 545-549 |
| Number of pages | 5 |
| Journal | Jinshu Xuebao/Acta Metallurgica Sinica |
| Volume | 36 |
| Issue number | 5 |
| State | Published - May 2000 |
| Externally published | Yes |
Keywords
- Hyper eutectic Al-Si alloy
- Semisolid
- Sphere-like α phase
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