| Full text | |
| Author(s): |
de Oliveira, Verona Biancardi
;
Padilha, Angelo Fernando
;
Moeslang, Anton
;
Raabe, Dierk
;
Zschommler Sandim, Hugo Ricardo
;
Barnett, M
Total Authors: 6
|
| Document type: | Journal article |
| Source: | Materials Science Forum; v. 753, p. 2-pg., 2013-01-01. |
| Abstract | |
Ferritic-martensitic steels like Eurofer-97 are candidate structural materials for future fusion reactors. In the tempered state, this steel contains fine particles dispersed in the ferritic matrix. The aim of this work is to investigate abnormal grain growth in Eurofer-97 steel. The microstructural evolution was followed by isothermal annealing between 200 and 800 degrees C (ferritic phase field) after cold rolling to 70, 80, and 90% reductions. Representative samples were characterized by scanning electron microscopy in the backscattered electron mode. Microtexture was evaluated by electron backscaftered diffraction. We propose a mechanism based on the size advantage acquired by nuclei with misorientation angles above 45 relative to their nearest neighbors to explain abnormal grain growth. Abnormal grain growth textures have components belonging to the alpha- and gamma-fibers with predominance of {111} < 110 >, {111}< 112 >, and {100}< 110 >. (AU) | |
| FAPESP's process: | 11/07109-2 - Microstructural stability of ODS-Eurofer and Eurofer-97 steels |
| Grantee: | Hugo Ricardo Zschommler Sandim |
| Support Opportunities: | Scholarships abroad - Research |