International audienceThe microstructure evolution associated to the manufacturing of a Fe-14Cr-1W-0.3Ti-0.3Y2O3 grade ferritic stainless steel strengthened by dispersion of nano oxides (ODS) was investigated. The material was initially hot extruded, then shaped into cladding tube geometry via cold pil-gering and stress release heat treatments. Each step of the process was analyzed to better under-stand the high microstructure stability of the material. Slight grain refinement and alpha fiber texture reinforcement was obtained after cold pilgering. Despite high levels of stored en-ergy the following heat treatment did not recrystallize the material. Only the Vickers hardness showed significant variations in the manufacturing steps, which was attributed to the recovery of statistically stored dislocations (SSD), as concluded from a combination of EBSD and X-ray diffraction measurements
