Novel ultrahigh-strength steel and preparation method thereof

The invention belongs to the field of new materials and relates to novel ultrahigh-strength steel and a preparation method thereof. The preparation method is characterized by comprising the following steps of material formation and material preparation (smelting, forging and heat treatment). Accordi...

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG YEQIN, LIU DABO, ZHONG PING, JIN JIANJUN, WANG YU, LIU MUTONG
Format:	Patent
Sprache:	chi ; 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:	The invention belongs to the field of new materials and relates to novel ultrahigh-strength steel and a preparation method thereof. The preparation method is characterized by comprising the following steps of material formation and material preparation (smelting, forging and heat treatment). According to the novel structural material S280 prepared through the preparation method, the tensile strength is equal to or larger than 1900 MPa, and the fracture toughness is larger than 90 MPa.