Effects of Fe on the oxidation/internal nitridation behavior and tensile properties of Cr and oxide dispersion ductilized Cr

The addition of Fe to Cr and to oxide dispersion ductilized Cr alloys modified, but did not eliminate subscale internal nitridation on oxidation in air. The addition of 45 wt.% Fe increased the room-temperature tensile yield strength of Cr-6MgO from ∼225 MPa to ∼650 MPa, while still exhibiting 1-1.5% tensile elongation.