WIDE AND HEAVY STEEL PLATE HAVING ULTRAHIGH STRENGTH AND CONTAINING RARE EARTH AND PREPARATION METHOD THEREFOR

A wide and heavy steel plate having ultrahigh strength and containing rare earth and a preparation method therefor, which relate to the technical field of steel production. The steel plate comprises the following chemical components in percentages by mass: C: 0.10%-0.18%, Mn: 0.55%-1.35%, Si: 0.15%-...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	HUANG, Biaokai, LEI, Xiaorong, YAN, Qiangjun, JIN, Jianfeng, LIU, Chengjun, ZHANG, Bo, LI, Qingchun, GE, Xin
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 PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL 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:	A wide and heavy steel plate having ultrahigh strength and containing rare earth and a preparation method therefor, which relate to the technical field of steel production. The steel plate comprises the following chemical components in percentages by mass: C: 0.10%-0.18%, Mn: 0.55%-1.35%, Si: 0.15%-0.35%, Cr: 0.20%-0.70%, Mo: 0.25%-0.65%, Ni: 0.85%-1.25%, Nb: 0.016%-0.044%, V: 0.025%-0.065%, Ti ≤ 0.010%, Al: 0.025%-0.070%, B: 0.001%-0.003%, P ≤ 0.015%, S ≤ 0.002%, T.O ≤ 0.0010%, N ≤ 0.0055%, Ce ≤ 0.0050 ppm, and the balance of iron and inevitable impurities. The steel plate has a tensile strength of 1400-1470 MPa, a yield strength of 1200-1300 MPa, an elongation of 10.0%-12.5%, a low temperature impact toughness at -40°C of 90-150 J, and a flatness of 3 mm/m and 5 mm/2m.