Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1500309 | Scripta Materialia | 2010 | 4 Pages |
Abstract
We document the evolution of dislocation densities in tempered martensite ferritic steels during long-term aging and creep. Scanning transmission electron microscopy in combination with a high-angle annular dark-field detector is used to study dislocations in a 12% Cr steel. During aging, the dislocation density quickly decreases by a factor 2 and then remains constant. Long-term creep results in an initial decrease by a factor 10, and after this sharp drop, the dislocation density continues to decrease.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
J. Pešička, A. Aghajani, Ch. Somsen, A. Hartmaier, G. Eggeler,