IRON ALLOY

PROBLEM TO BE SOLVED: To provide an iron alloy which has a component composition different from that of conventional iron-based material, and can achieve both high strength and high ductility at a high level.SOLUTION: An iron alloy includes Ni, Co, Ti, and the balance of Fe and inevitable impurities...

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Bibliographische Detailangaben
Hauptverfasser:	KURAMOTO SHIGERU, EDALATI KAVEH, FURUTA TADAHIKO, HOTTA ZENJI
Format:	Patent
Sprache:	eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an iron alloy which has a component composition different from that of conventional iron-based material, and can achieve both high strength and high ductility at a high level.SOLUTION: An iron alloy includes Ni, Co, Ti, and the balance of Fe and inevitable impurities. When assuming that the total amount of Fe, Ni and Co is 100 atom% (hereinafter referred to as "%" ), a first composition ratio, which is a ratio of an amount of Fe to the total amount of Ni and Co, that is, (Fe/(Ni+Co)) is 0.65 to 0.78; and a second composition ratio, which is a ratio of the amount of Co to the amount of Ni, that is, (Co/Ni) is 2 or less. The iron alloy has a texture having a minute twin (nano-twin) structure therein formed by undergoing strong cold-working, annealing or the like and exhibits extremely high strength and ductility. For example, the iron alloy has the maximum tensile strength (UTS:MPa) of 2,400 MPa or more and a ductility (EL:%) of 10% or more.