Journal article
Atomic resolution imaging of precipitate transformation from cubic TaN to tetragonal CrTaN
In
Scripta Materialia
—
2012, Volume 66, Issue 5, pp. 261-264
Abstract
In 9–12% Cr creep-resistant steels Cr(V,Nb,Ta)N Z-phase is known to replace metastable (V,Nb,Ta)N MN precipitates at high temperatures. The precipitation process of Z-phase does not follow the classical nucleation theory, where dissolving MN particles provide constituents for Z-phase nucleation in the matrix.
Using atomic resolution transmission electron microscopy, the current work demonstrates that metastable cubic TaN precipitates in a complex steel gradually transform compositionally and crystallographically into stable tetragonal CrTaN precipitates under the influence of Cr indiffusion from the steel matrix.
| Language: | English |
|---|---|
| Year: | 2012 |
| Pages: | 261-264 |
| ISSN: | 18728456 and 13596462 |
| Types: | Journal article |
| DOI: | 10.1016/j.scriptamat.2011.11.005 |
| ORCIDs: | Danielsen, Hilmar Kjartansson , Hald, John and Somers, Marcel A. J. |
