Atom probe tomography analysis of Ti-Y-O clustering during processing of nanoscale oxide particles in 14Cr ODS ferritic steels

摘要

Atom probe tomography is used to investigate the clustering of Y-Ti-O in a 14%Cr-2%W-0.3%Ti & 0.3% Y_2O_3 ODS steel. The clusters in the consolidated material are compared to clusters observed in the powder prior to consolidation. A higher density of smaller clusters is observed in the powder, and the clusters are found to contain more O and less Y.