STEEL SHEET AND HIGH STRENGTH PRESS HARDENED STEEL PART HAVING EXCELLENT BENDING AND METHOD OF MANUFACTURING THE SAME

Steel sheet and high strength press hardened steel part having excellent bending and method of manufacturing the same Steel sheet having a chemical composition comprising in wt% C : 0.2 - 0.4%, Mn : 0.8 - 2.0%, Si : 0.1 - 0.5 %, Al : 0.01 - 0.1 %, Ti: 0.01 - 0.1 %, B: 0.0005 - 0.005 %, P ≤ 0.040 %,...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	LUCAS, Emmanuel, STECHMANN, Guillaume, DUMONT, Alice, SALIB, Matthieu
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FERROUS METALS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Steel sheet and high strength press hardened steel part having excellent bending and method of manufacturing the same Steel sheet having a chemical composition comprising in wt% C : 0.2 - 0.4%, Mn : 0.8 - 2.0%, Si : 0.1 - 0.5 %, Al : 0.01 - 0.1 %, Ti: 0.01 - 0.1 %, B: 0.0005 - 0.005 %, P ≤ 0.040 %, Ca ≤ 0.01%, S ≤ 0.006 %, N ≤ 0.01 %, Said steel sheet comprising from the bulk to the surface of the coated steel sheet a bulk and a skin layer occupying the outermost 10% of the thickness on either side of the bulk, such bulk being topped by a skin layer occupying the outermost 10% of the thickness on either side of the bulk, the density of TiN / Ti(C,N) inclusions in said skin being smaller than 240 particles / mm² and the clustering index of MnS inclusions in said skin being lower than 110 µm/mm2. This allows to manufacture hot pressed parts having a tensile strength equal to or greater than 1300MPa and a bending angle normalized to 1.5mm and measured in the transverse direction strictly greater than 48°.