Abstract
The microstructure and deformation behavior of high temperature tension of a directionally solidified (DS) NiAl-15Cr alloy have been investigated. The results reveal that the microstructure consists of dendritic β-NiAl phase, interdendritic γ/γ′ phase and transient layer γ′ phase. The alloy shows superplastic behavior when it is deformed under the conditions of temperature range of 1123-1373 K and initial strain rate range of 1.67 × 10-4 - 1.67 × 10-2 S-1. The maximum elongation of 280% with m = 0.22 is obtained at 1323 K and an initial strain rate of 8.35 × 10-3 S-1. The superplastic mechanism for the alloy is also discussed by the observation of the microstructures evolution during the superplastic deformation process.
| Original language | English |
|---|---|
| Pages (from-to) | 494-498 |
| Number of pages | 5 |
| Journal | Jinshu Xuebao/Acta Metallurgica Sinica |
| Volume | 40 |
| Issue number | 5 |
| State | Published - May 2004 |
| Externally published | Yes |
Keywords
- Directional solidification
- NiAl-based intermetallics
- Superplasticity
Fingerprint
Dive into the research topics of 'Microstructure and superplastic deformation behavior of NiAl-15Cr alloy'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver