EP 2799585 A1 20141105 - HIGH-STRENGTH THICK STEEL PLATE FOR CONSTRUCTION HAVING EXCELLENT CHARACTERISTICS FOR PREVENTING DIFFUSION OF BRITTLE CRACKS, AND PRODUCTION METHOD THEREFOR
Title (en)
HIGH-STRENGTH THICK STEEL PLATE FOR CONSTRUCTION HAVING EXCELLENT CHARACTERISTICS FOR PREVENTING DIFFUSION OF BRITTLE CRACKS, AND PRODUCTION METHOD THEREFOR
Title (de)
HOCHFESTE DICKE STAHLPLATTE ZUR KONSTRUKTION MIT HERVORRAGENDEN MAGNETISCHEN EIGENSCHAFTEN ZUR VERHINDERUNG DER DIFFUSION VON SPRÖDEN RISSEN UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
PLAQUE D'ACIER ÉPAISSE DE HAUTE RÉSISTANCE MÉCANIQUE POUR STRUCTURE DOTÉE D'EXCELLENTES PROPRIÉTÉS D'ARRÊT DE PROPAGATION DE FISSURES CASSANTES, ET PROCÉDÉ DE FABRICATION DE CELLE-CI
Publication
Application
Priority
- JP 2011285569 A 20111227
- JP 2012111157 A 20120515
- JP 2012063410 W 20120518
Abstract (en)
Provided is a high-strength thick steel plate for structural use having a thickness of 50 mm or more and excellent brittle crack arrestability which can be preferably used for ships and a method for manufacturing the steel plate. The thick steel plate having excellent brittle crack arrestability has a specified chemical composition and a metallographic structure mainly including a ferrite phase and including a texture, in which the integration degree I of the RD//(110) plane in the surface portion is 1.3 or more and the integration degree I of the RD//(110) plane in the central portion in the thickness direction is 1.8 or more, a Charpy fracture appearance transition temperature vTrs in the surface portion of -60°C or lower and a Charpy fracture appearance transition temperature vTrs in the central portion in the thickness direction of -50°C or lower.
IPC 8 full level
C22C 38/14 (2006.01); C21D 8/02 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP)
C21D 8/02 (2013.01); C21D 8/0205 (2013.01); C21D 8/0226 (2013.01); C21D 8/0263 (2013.01); C22C 38/00 (2013.01); C22C 38/001 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/14 (2013.01); C22C 38/18 (2013.01); C21D 2201/05 (2013.01); C21D 2211/005 (2013.01)
Designated contracting state (EPC)
AL 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 RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2799585 A1 20141105; EP 2799585 A4 20150114; EP 2799585 B1 20170118; BR 112014015795 A2 20170613; BR 112014015795 A8 20170704; BR 112014015795 B1 20190212; CN 104011250 A 20140827; CN 104011250 B 20170308; JP 2013151731 A 20130808; JP 5304924 B2 20131002; KR 101588261 B1 20160125; KR 20140094022 A 20140729; WO 2013099319 A1 20130704
DOCDB simple family (application)
EP 12863931 A 20120518; BR 112014015795 A 20120518; CN 201280065235 A 20120518; JP 2012063410 W 20120518; JP 2012111157 A 20120515; KR 20147017170 A 20120518