Strengthening mechanisms of different oxide particles in 9Cr ODS steel at high temperatures

The influence of different oxide particles on deformation mechanisms of 9Cr ODS steels at temperatures 400–600 °C is tested. Two ODS variants with Al2O3 and Y2O3 dispersed particles respectively and one variant without particles have been prepared by powder metallurgy. The deformation mechanisms are investigated by the tensile and stress-relaxation test at temperatures 400 °C and 600 °C. The analysis is based on a comparison of athermal and...