Microstructural stability of secondary phases in an ODS ferritic steel after thermal aging at 873 K

An oxide dispersion strengthened (ODS) steel with nominal composition Fe–14Cr–2W–0.4Ti–0.3Y₂O₃ (wt%) has been manufactured by mechanical alloying of pre-alloyed powders with nanosized Y₂O₃, compacted by hot isostatic pressing and hot cross rolled. In order to evaluate the long-term thermal...

The effect of nano-sized κ-carbides on the mechanical properties of an Fe-Mn-Al-C alloy

The strengthening via precipitation of nano-sized κ-carbides leads to exceptional strength-ductility balance in low-density steels. During aging, such nanocarbides form through spinodal decomposition by fluctuations in the aluminum and carbon content in the austenite, followed by short-range ordering. At lower aging temperatures and short...