By a News Reporter-Staff News Editor at Science Letter -- Investigators discuss new findings in Nuclear Materials. According to news reporting originating from Oxford, United Kingdom, by NewsRx correspondents, research stated, "ODS steels are promising materials for Sodium cooled Fast Reactors since their fine distribution of nano-clusters confers excellent mechanical properties. However, the nano-feature stability needs to be assessed under neutron irradiation."
Our news editors obtained a quote from the research from the University of Oxford, "Before irradiation, the characterizations show that nano-particles, are finely distributed within the ferritic matrix and are identified to have a pyrochlore type structure. After irradiation of the MA957 alloy in the Phenix French reactor at 412 degrees C up to 50 dpa and 430 degrees C up to 75 dpa, transmission electron microscopy characterization reveals a very slight density fall but no distinguishable difference in nano-features size before and after irradiation. In addition, after both irradiations, the nano-oxides are still (Y, Ti, O) compounds with orientation relationship with the matrix. A multislice simulation of high resolution images suggests that nano-particles still have a fcc pyrochlore type structure after irradiation."
According to the news editors, the research concluded: "A possible change of lattice parameter seems to be highlighted, possibly due to disordering by cascade effect."
For more information on this research see: Nano-cluster stability following neutron irradiation in MA957 oxide dispersion strengthened material. Journal of Nuclear Materials, 2014;444(1-3):314-322. Journal of Nuclear Materials can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Nuclear Materials - www.elsevier.com/wps/product/cws_home/505671)
The news editors report that additional information may be obtained by contacting J. Ribis, University of Oxford, Dept. of Mat, Oxford OX1 3PH, United Kingdom (see also Nuclear Materials).
Keywords for this news article include: Oxford, Europe, United Kingdom, Nuclear Materials
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