000203367 001__ 203367
000203367 005__ 20181203023705.0
000203367 0247_ $$2doi$$a10.1016/j.jnucmat.2010.01.023
000203367 022__ $$a00223115
000203367 037__ $$aARTICLE
000203367 245__ $$aIdentification of new phases in annealed Fe-18CrWTi ODS powders
000203367 260__ $$c2010
000203367 269__ $$a2010
000203367 336__ $$aJournal Articles
000203367 520__ $$aFe-18CrWTi ODS steels are developed by CEA for the SFR generation IV program. The powders of a Fe-18CrWTi alloy reinforced by Y2O3 by mechanical milling have been annealed at 850 °C, 1100 °C and 1300 °C and their microstructure has been studied by SEM and TEM in order to better understand the precipitation mechanisms. The powders are constituted of large micrometric grains surrounded by nanometric ferritic grains. At 850 °C, no nano-oxide could be detected. At 1100 °C, some Y2Ti2O7 precipitates of several hundreds of nanometres are detected at the grains boundaries, but again no nano-oxide could be observed. At 1300 °C, the precipitation has greatly changed. The sample contains hexagonal plate-shaped micrometric Y2TiO5 precipitates. A high density of nano-oxides of size around 20-30 nm is also revealed by EFTEM and HRTEM. They are of different types such as Y2O3, Y2Ti2O7 and a new phase containing Y, Ti and O that we called PyrOrtho (orthorhombic with a = 7.24 Å, b = 12.4 Å and c = 18.2 Å). This study shows that addition of Ti makes the precipitation sequence very complex. © 2010 Elsevier B.V. All rights reserved.
000203367 6531_ $$aElectric breakdown
000203367 6531_ $$aGeneration IV
000203367 6531_ $$aHexagonal plates
000203367 6531_ $$aHigh density
000203367 6531_ $$aIron alloys
000203367 6531_ $$aMechanical alloying
000203367 6531_ $$aMechanical milling
000203367 6531_ $$aMilling (machining)
000203367 6531_ $$aNanometres
000203367 6531_ $$aNanometrics
000203367 6531_ $$aNano-oxides
000203367 6531_ $$aPrecipitation mechanism
000203367 6531_ $$aPrecipitation sequence
000203367 6531_ $$aSEM and TEM
000203367 6531_ $$aTiO
000203367 6531_ $$aTitanium compounds
000203367 700__ $$0248450$$aCayron, C.$$g112215
000203367 700__ $$aMontani, A.
000203367 700__ $$aVenet, D.
000203367 700__ $$aCarlan, Y.d.
000203367 773__ $$j399$$q219-224$$tJournal of Nuclear Materials
000203367 909C0 $$0252516$$pLMTM$$xU12903
000203367 909CO $$ooai:infoscience.tind.io:203367$$pSTI$$particle
000203367 937__ $$aEPFL-ARTICLE-203367
000203367 973__ $$aOTHER$$rREVIEWED$$sPUBLISHED
000203367 980__ $$aARTICLE