Abstract
Microstructural stability of a nickel base single crystal alloy DD8 has been investigated. Standard heat treated specimen showed good microstructural stability at 950°C. While under the as-cast condition, a kind of rod-like phase precipitated in the interdendritic region of as-cast specimen during thermal exposure. The phase, which has bcc structure, was enriched with Cr. Thermo-calc also predicted precipitation of a bcc phase at around 950°C. The Cr-rich bcc phase was considered as α-Cr and formed due to the segregation of Cr under the as-cast condition.
| Original language | English |
|---|---|
| Pages (from-to) | 127-130 |
| Number of pages | 4 |
| Journal | Journal of Materials Science and Technology |
| Volume | 24 |
| Issue number | 1 |
| Publication status | Published - 2008 Jan |
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Mechanics of Materials
- Mechanical Engineering
- Polymers and Plastics
- Metals and Alloys
- Materials Chemistry