EP 2431492 A2 20120321 - HIGH MANGANESE NITROGEN-CONTAINING STEEL SHEET HAVING HIGH STRENGTH AND HIGH DUCTILITY, AND METHOD FOR MANUFACTURING SAME
Title (en)
HIGH MANGANESE NITROGEN-CONTAINING STEEL SHEET HAVING HIGH STRENGTH AND HIGH DUCTILITY, AND METHOD FOR MANUFACTURING SAME
Title (de)
STAHLBLECH MIT HOHEM MANGAN- UND STICKSTOFFANTEIL SOWIE HOHER FESTIGKEIT UND LEITFÄHIGKEIT UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
TÔLE D'ACIER CONTENANT DE L'AZOTE À HAUTE TENEUR EN MANGANÈSE PRÉSENTANT UNE RÉSISTANCE ET UNE DUCTILITÉ ÉLEVÉES, ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- KR 2010002625 W 20100427
- KR 20090036963 A 20090428
- KR 20100026584 A 20100325
Abstract (en)
Provided is a high manganese nitrogen-containing steel sheet. The high manganese nitrogen-containing steel sheet according to the present invention comprises 0.5 to 1.0 wt % of carbon, 10 to 20 wt % of manganese, 0.02 to 0.3 wt % of nitrogen, with a remainder of Fe and unavoidable impurities. The high manganese nitrogen-containing steel sheet according to the present invention produces an austenite phase at room temperature, in which the stacking fault energy is effectively controlled by adding chrome and nitrogen. Accordingly, the high manganese nitrogen-containing steel sheet of the present invention produces a mechanical twin during the plastic deformation of the steel sheet, thereby increasing the work hardening rate, tensile strength, and workability.
IPC 8 full level
C22C 38/04 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/34 (2006.01); C22C 38/38 (2006.01)
CPC (source: EP US)
C21D 6/005 (2013.01 - EP US); C21D 8/0205 (2013.01 - EP US); C21D 9/46 (2013.01 - EP US); C22C 38/001 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP US); C22C 38/34 (2013.01 - EP US); C22C 38/38 (2013.01 - EP US); C21D 2211/001 (2013.01 - EP US); C21D 2211/004 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
EP 2431492 A2 20120321; EP 2431492 A4 20140122; EP 2431492 B1 20150930; CN 102439188 A 20120502; JP 2012525500 A 20121022; JP 5437482 B2 20140312; US 2012045358 A1 20120223; WO 2010126268 A2 20101104; WO 2010126268 A3 20110303
DOCDB simple family (application)
EP 10769913 A 20100427; CN 201080019097 A 20100427; JP 2012508394 A 20100427; KR 2010002625 W 20100427; US 201013318129 A 20100427