Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jfe Steel CorpfiledCriticalJfe Steel Corp
Priority to MYPI2014703110ApriorityCriticalpatent/MY172403A/en
Priority claimed from PCT/JP2012/002775external-prioritypatent/WO2013160928A1/en
Publication of MY172403ApublicationCriticalpatent/MY172403A/en
An object of the present invention is to provide a high-strength steel sheet exhibiting crack resistance during press forming and having relatively small planar anisotropy in ductility. Specifically, the present invention provides a high-strength steel sheet comprising a chemical composition including by mass%: C: more than 0.0005% and less than 0.10%; Si: 1.5% or less; Mn: 0.1 % or more and 3.0% or less; P: 0.080% or less; S: 0.03% or less; sol. Al: 0.01 % or more and 0.50% or less; N: 0.005 % or less; at least one element selected from Nb: 0.20% or less and Ti: 0.20% or less; and the remainder as Fe and incidental impurities, wherein steel microstructure of the steel sheet contains at least 60% of ferrite phase by volume fraction, and provided that distribution function of 3D crystal orientation ( orientation distribution function, ODF) is represented by { ? 1, <D, ?2}, intensity of ODF {0?, 0?, 45?} where <D = 0?, ?1 = 0? and ?2 = 45? is 3.0 or less; and intensity of ODF {0?, 35?, 45?} where <D = 35?, ?1 = 0? and ?2 = 45? is 2.5 or more and 4.5 or less. Figure 1
MYPI2014703110A2012-04-232012-04-23High-strength steel sheet and method for manufacturing same
MY172403A
(en)