Abstract
Directionally solidified microstructures were investigated based on the calculation and comparison of interface growth temperatures of different phases in Cu-1.0% Cr hypoeutectic alloy at various growth velocities. The results show that the entirely coupled eutectics could not be obtained at the growth rate higher than 5 μm/s and the α-Cu phase will be the primary phase solidified ahead of the coupled eutectics, which agrees with the experiment results. In addition, the primary dendritic arm spacing, dendritic radius of α-Cu phase and the volume fraction of eutectics decrease with the increase of the growth rate. The value of primary dendritic arm spacing of Cu-1.0% Cr alloy measured in the experiment is very close to the calculation results of KF model.
| Original language | English |
|---|---|
| Pages (from-to) | 1-5 |
| Number of pages | 5 |
| Journal | Hangkong Cailiao Xuebao/Journal of Aeronautical Materials |
| Volume | 28 |
| Issue number | 5 |
| State | Published - Oct 2008 |
Keywords
- Cu-1.0% Cr hypoeutectic alloy
- Directional solidification
- Microstructure
- Primary dendritic arm spacing