IRON-BASE ALLOY AND METHOD FOR PRODUCING THE SAME

An iron-based alloy comprises 1.5 to 2.5 wt% of C, 0.25 to 4.75 wt% of Ni, and W and V in quantities surrounded by the line L as shown in Fig. 1 of the attached drawings with a balance of Fe and inevitable impurities. The iron-based alloy is obtained by a first heat treatment for applying a solid so...

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Bibliographische Detailangaben
Hauptverfasser:	SUGAWARA, TAKESHI, YAMADA, NORIYUKI, ASAMI, MAKOTO
Format:	Patent
Sprache:	eng ; fre
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:	An iron-based alloy comprises 1.5 to 2.5 wt% of C, 0.25 to 4.75 wt% of Ni, and W and V in quantities surrounded by the line L as shown in Fig. 1 of the attached drawings with a balance of Fe and inevitable impurities. The iron-based alloy is obtained by a first heat treatment for applying a solid solution treatment by rapidly cooling the iron-based alloy from a temperature of an austenite forming temperature or more to consequently obtain a mixed matrix comprising a base matrix of martensite and remaining austenite phases and a non-molten carbide, and a second heat treatment for cooling the iron-based alloy after precipitating an MC type carbide within an eutectoid transformation temperature range to consequently precipitate a low carbon content austenite phase.