Abstract
The effect of crystal orientation on the microstructure of a nickel-based crystalline superalloys during directional solidification was explored. Differently oriented crystals with [001] and [011] orientations were fabricated with seeding technique. The results showed that primary dendrite arm spacings decreased simultaneously with the increase of misroientation. The primary dendrites arrange in lines in [011] single crystal. For [001] oriented crystals, the size of γ' phase increased with the increasing of misorientation. However, it was observed that the size of γ decreased with large misorientation for [011] orientated growth. Meanwhile, more γ' in [011] crystals tended to be triangular.
| Original language | English |
|---|---|
| Pages (from-to) | 1291-1295 |
| Number of pages | 5 |
| Journal | Crystal Research and Technology |
| Volume | 46 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 2011 |
Keywords
- crystal growth
- crystal orientation
- directional solidification
- microstructure
- superalloys