C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
C21D 8/02 (2006.01) C21D 9/46 (2006.01) C22C 38/02 (2006.01) C22C 38/04 (2006.01) C22C 38/06 (2006.01) C22C 38/12 (2006.01)
Patent
CA 2686940
The invention relates to a cold-rolled and annealed steel sheet having a strength greater than 1200 MPa, the composition of which comprises, the contents being expressed by weight: 0.10% < C < 0.25%, 1% <= Mn < 3%, Al > 0.010%, Si < 2.990%, S < 0.015%, P < 0.1%, N < 0.008%, it being understood that 1% < Si + Al < 3%, the composition optionally comprising: 0.05% < V < 0.15%, B < 0.005%, Mo < 0.25% Cr < 1.65%, it being understood that Cr + 3 Mo > 0.3%, Ti in an amount such that Ti/N >= 4 and Ti < 0.040%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting, the microstructure of the steel comprising 15 to 90% bainite, the remainder consisting of martensite and of residual austenite.
L'invention concerne une tôle d'acier laminée à froid et recuite de résistance supérieure à 1200 MPa, dont la composition comprend, les teneurs étant exprimées en poids : 0,10% < C < 0,25%, 1 %<= Mn < 3%, Al > 0,010 %, Si<2,990%, S < 0,015%, P< 0,1 %, N<0,008%, étant entendu que 1 % <Si+AI <3%, la composition comprenant éventuellement : 0,05% < V < 0,15%, B<0,005%, Mo < 0,25% Cr < 1,65% étant entendu que Cr+(3 x Mo) >0,3%, Ti en quantité telle que Ti/N>=4 et que Ti<0,040%, le reste de la composition étant constitué de fer et d'impuretés inévitables résultant de l'élaboration, la microstructure de l'acier comprenant 15 à 90% de bainite, le solde étant constitué de martensite et d'austénite résiduelle.
Gilotin Javier
Moulin Antoine
Arcelormittal France
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
LandOfFree
Process for manufacturing cold-rolled and annealed steel... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for manufacturing cold-rolled and annealed steel..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for manufacturing cold-rolled and annealed steel... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2022215