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 inJournal of nuclear materials Vol. 385; no. 2; pp. 231 - 235
Main Authors Eiselt, Ch.Ch, Klimenkov, M., Lindau, R., Möslang, A., Sandim, H.R.Z., Padilha, A.F., Raabe, D.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Amsterdam Elsevier B.V 31.03.2009
Elsevier
Subjects
Applied sciences
Controled nuclear fusion plants
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fission nuclear power plants
Fuels
Installations for energy generation and conversion: thermal and electrical energy
Nuclear fuels
28.52.Fa
61.46.−w
Nuclear fusion reactor
Blanket
High resolution
Martensitic steel
Divertor
Oxides
Ferritic steel
Microstructure
Dispersion strengthened steel
Phase transitions
Nuclear reactor
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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.
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