LOW ALLOY THIRD GENERATION ADVANCED HIGH STRENGTH STEEL

A high strength steel comprises, during intercritical annealing, about 20-80 pcnt volume ferrite and 20-80 pcnt austenite, and wherein the Ms temperature calculated for the austenite phase during intercritical anneal [100oC. The high strength steel exhibits a tensile elongation of at least 20 pcnt a...

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Bibliographische Detailangaben
Hauptverfasser:	GARZA-MARTINEZ, Luis, Gonzalo, THOMAS, Grant, Aaron
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:	A high strength steel comprises, during intercritical annealing, about 20-80 pcnt volume ferrite and 20-80 pcnt austenite, and wherein the Ms temperature calculated for the austenite phase during intercritical anneal [100oC. The high strength steel exhibits a tensile elongation of at least 20 pcnt and an ultimate tensile strength of at least 880 MPa. The high strength steel may comprise 0.20-0.30 wt pcnt C, 3.0-5.0 wt pcnt Mn, with Al and Si additions such that the optimum intercritical temperature is above 700 oC.