Explanation

The high temperature alloy based on iron can be deformed into profiles or parts blanks through hot working or (and) cold processing. In general, about 25% nickel should be added to the iron matrix to form a stable austenite matrix; Add about 15% chromium to ensure that the alloy has sufficient oxidation and corrosion resistance; Add W or Mo+W for gang dissolution strengthening, and add Ti, A1 or (and) Nb for precipitation strengthening. The hot working of iron-base wrought superalloy is generally better than that of nickel-base wrought superalloy, and the malleability becomes better and better with the increase of iron content. The solution strengthened iron-base wrought superalloy is mainly used as the flame tube and other parts in the combustion chamber of the early production aeroengine, and the precipitation strengthened iron-base wrought superalloy is mainly used as the turbine disk and other parts of the early production aeroengine and gas turbine.

Classification