Effect of the Laves phase and carbide on the creep strength of Fe–C–15Cr–W alloys

To clarify the effects of the Fe2W Laves phase and Cr23C6 carbide on the creep strength of a new ferritic heat-resistant steel with the ferrite parent phase strengthened by intermetallic compounds and carbonitrides, the creep strength at 973 K and microstructure of the ternary Fe–15Cr-(6, 9)W alloys and the quaternary Fe-0.05C–15Cr-(6, 9)W alloys (mass%) were investigated. Increasing the amount of Laves phase precipitates by increasing the...