High-resolution transmission electron microscopy and electron backscatter diffraction in nanoscaled ferritic and ferritic–martensitic oxide dispersion strengthened–steels
For specific blanket and divertor applications in future fusion power reactors a replacement of presently considered reduced activation ferritic–martensitic (RAFM) steels as a structural material by suitable oxide dispersion strengthened ferritic–martensitic steels would allow a substantial increase...
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Published in | Journal of nuclear materials Vol. 385; no. 2; pp. 231 - 235 |
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Main Authors | , , , , , , |
Format | Journal Article Conference Proceeding |
Language | English |
Published |
Amsterdam
Elsevier B.V
31.03.2009
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | For specific blanket and divertor applications in future fusion power reactors a replacement of presently considered reduced activation ferritic–martensitic (RAFM) steels as a structural material by suitable oxide dispersion strengthened ferritic–martensitic steels would allow a substantial increase of the operating temperature from ∼823 to about 923K. Due to this reason the RAFM-alloy ODS-Eurofer has already been developed and produced with industrial partners. In the He-cooled modular divertor concept, where temperatures above 923K will arise, an ODS-steel with a purely ferritic matrix is advantageous, because of missing phase transitions. Due to this reason, a special ferritic ODS-steel is being manufactured as well. In this work the microstructures of these two ODS-alloy types, analysed mainly by high resolution TEM are compared, with respect to different manufacturing processes. In addition first results of high resolution EBSD scans together with determined orientation maps of the RAFM steel ODS-Eurofer will also be presented. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0022-3115 1873-4820 |
DOI: | 10.1016/j.jnucmat.2008.11.029 |