Mateus, R.Carvalho, Patricia AlmeidaNunes, D.Alves, L. C.Franco, N.Correia, J.B.Alves, E.2011-02-012011-02-012010-09-27Mateus, R.; Carvalho, P. A.; Nunes, D.; Alves, L. C.; Franco, N.; Correia, J. B., Alves, E. Microstructural characterization of the ODS Eurofer 97 EU-batch. In: 26th Symposium on Fusion Technology, 26th SOFT 2010, Porto, 27 September - 1October 2010http://hdl.handle.net/10400.9/1145Four as-processed forms (Plate 16, Plate 6, Rod 20 and Rod 12.5) of the ODS Eurofer 97 EU-batch produced under different thermomechanical conditions have been investigated by scanning nuclear microprobe, scanning and transmission electron microscopy, energy dispersive X-ray spectroscopy, electron backscattered diffraction, hightemperature X-ray diffraction and microhardness measurements. The materials presented a ferritic microstructure with a homogeneous distribution of Y. The thicker plate presented a fine carbide dispersion while the other forms showed carbide morphologies corresponding to pseudo-pearlitic and pseudo-bainitic transformations with wellmatched hardness values. Hot rolling induced crystallographic textures of the {101}<101> type, rotary swaging resulted in a complex texture, and extrusion produced a strong <101> fiber texture. X-ray diffraction experiments at high temperature showed that at a cooling rate of 5 ºC/min the complete austenite-to-ferrite transformation occurs between 760 and 750 ºC compromising the material quenchability.engODS RAFM steelChemical compositionMicrostructure studiesconference object