Abstract
Droplets of Co-37.6 wt pct Mo and Ni-47.7 wt pct Mo eutectic alloys were rapidly solidified during the containerless processing in a 3 m drop tube. A kind of anomalous eutectic appears in these two eutectic alloys when undercooling is beyond 56 K and 61 K, respectively. The two eutectic phases in the anomalous eutectic were observed to grow in the dendrite manner. The formation of the anomalous eutectic is ascribed to the cooperative dendrite growth of the two independently nucleated eutectic phases. Current dendrite and eutectic growth theories are applied to describe the observed processes.
Original language | English |
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Pages (from-to) | 553-556 |
Number of pages | 4 |
Journal | Journal of Materials Science and Technology |
Volume | 19 |
Issue number | 6 |
State | Published - Nov 2003 |
Keywords
- Containerless processing
- Dendrite growth
- Eutectic growth
- Rapid solidification