Deformation-induced dislocation networks at the γ-γ′ interfaces in the single-crystal superalloy SC16: A mechanism-based analysis
| Autor: | Debashis Mukherji, H. Gabrisch, R. P. Wahi |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Dislocation creep
Materials science Physics and Astronomy (miscellaneous) Condensed matter physics Metals and Alloys Condensed Matter Physics Electronic Optical and Magnetic Materials Stress (mechanics) Superalloy Crystallography Peierls stress Perpendicular Substructure General Materials Science Deformation (engineering) Dislocation |
| Zdroj: | Philosophical Magazine A. 74:229-249 |
| ISSN: | 1460-6992 0141-8610 |
| DOI: | 10.1080/01418619608239699 |
| Popis: | The formation of dislocation networks at the γ-γ′ interfaces in a single-crystal nickel-based superalloy SC16 has been studied after deformation at 1223 K. The dislocation segments in the networks were characterized. As a result the dislocation substructure was found to be quite different on interfaces parallel and perpendicular to the applied stress direction. Reactions between glide dislocations were essentially observed on the latter type of interface. A model of network formation based on cross-slip leading to dislocation interactions has been proposed to explain the observed networks. |
| Databáze: | OpenAIRE |
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