Microstructural properties of Spark Plasma Sintered ODS Fe-14Cr steels

Fe-14 Cr based ODS alloys are candidates for nuclear applications such as cladding tubes. One of the main issues is the fabrication of dense material with uniformly dispersed nanometer-size oxide particles. In order to investigate the influence of the fabrication route on the microstructure of the material the samples with Yttria contents of 0…0.6wt% were produced by mechanical alloying and subsequent consolidation via spark plasma sintering (SPS). The microstructure was characterized concerning the grain and particle size by means of electron backscatter diffraction (EBSD) and atom probe tomography (APT).