PROCEDE DE FABRICATION DE TOLES D'ACIER AUSTENITIQUE FER-CARBONE-MANGANESE A HAUTE RESISTANCE A LA FISSURATION DIFFEREE, ET TOLES AINSI PRODUITES

Iron-carbon-manganese austenitic steel sheet, the chemical composition of which comprises, the contents being expressed by weight: 0.45% C 0.75%; 15% Mn 26%; Si 3%; Al 0.050%; S 0.030%; P 0.080%; N 0.1%; at least one metal element chosen from vanadium, titanium, niobium, chromium and molybdenum, whe...

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Hauptverfasser:	ROSCINI MAURITA, SCOTT COLIN, DEZ ANNE EDITH, CORNETTE DOMINIQUE, CUGY PHILIPPE
Format:	Patent
Sprache:	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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Zusammenfassung:	Iron-carbon-manganese austenitic steel sheet, the chemical composition of which comprises, the contents being expressed by weight: 0.45% C 0.75%; 15% Mn 26%; Si 3%; Al 0.050%; S 0.030%; P 0.080%; N 0.1%; at least one metal element chosen from vanadium, titanium, niobium, chromium and molybdenum, where 0.050% V 0.50%; 0.040% Ti 0.50; 0.070% Nb 0.50%; 0.070% Cr 2%; 0.14% Mo 2%; and, optionally, one or more elements chosen from 0.0005% B 0.003%; Ni 1%; Cu 5%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting, the amounts of said at least one metal element in the form of precipitated carbides, nitrides or carbonitrides being: 0.030% Vp 0.150%; 0.030% Tip 0.130%; 0.040% Nbp 0.220%; 0.070% Crp 0.6%; 0.14% Mop 0.44%.