Abstract
The characteristics of microstructural evolution along the transverse axis of the 1/3 position of turbine blade body have been investigated with the help of transmission electron microscopy. Dislocation configurations change with the evolution of local stress from the leading edge to the trailing edge: slip bands → dislocations → only γ/γ′ structure → dislocations → slip bands. The formation mechanism of slip bands illustrates that dislocations are generated in pairs and glide on the same plane continuously. Finite element analysis is made to assess the stress distribution along the transverse axis of turbine blade body. The instantaneous and inhomogeneous stress at the leading and trailing edges of blade body becomes the driving force for the formation of slip bands.
| Original language | English |
|---|---|
| Pages (from-to) | 4620-4625 |
| Number of pages | 6 |
| Journal | Journal of Materials Engineering and Performance |
| Volume | 24 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2015 Dec 1 |
| Externally published | Yes |
Keywords
- dislocation
- slip band
- stress
- superalloy
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering