Abstract
The typical defects resulting in the broken wire during the preparation of NbTi superconducting alloy wires was described. The formation mechanism of forging streamline, the Ti-riched segregation resulted from solute redistribution and the mechanism of streamline and black spots were analyzed. The results indicate that the Ti-riched segregation of NbTi alloy could be described by black spots and tree ring in X-ray photograph and the essence of this segregation is channel segregation. It is aimed to provide a method to optimize the preparation technology, which can eliminate the Ti-rich segregation and improve the constituent and microstructure homogeneity of NbTi superconducting alloy.
| Original language | English |
|---|---|
| Pages (from-to) | 2702-2707 |
| Number of pages | 6 |
| Journal | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
| Volume | 43 |
| Issue number | 11 |
| State | Published - 1 Nov 2014 |
Keywords
- Black spot
- Channel segregation
- Nb inclusion
- NbTi
- Superconducting
- Ti-riched segregation
- Tree ring