Method for producing fe-al alloy

• Main Authors: YOKOYAMA, SHIN-ICHIRO, FUJIYOSHI, MASARU
• Format: Patent
• Language: Chinese; English
• Published: 21.12.2014
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

A method for producing Fe-Al alloy includes: ingot-producing by casting Fe-Al alloy and taking out the Fe-Al alloy from a mold to obtain an ingot, the Fe-Al alloy containing Al: 2.0 to 9.0 mass % and a balance of Fe and impurities; hot-forging the ingot to form a hot-forged material; hot-rolling the hot-forged material to form a hot-rolled material; oxide-film removing by removing an oxide film of the hot-rolled material to form a material for cold rolling; cold-rolling the material for cold rolling to form a cold-rolled material; and annealing the cold-rolled material. Heating of the ingot in the hot-forging starts before a surface temperature of the ingot taken out from the mold is cooled to less than 250° C. in the ingot-producing.