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公开(公告)号:US20160194739A1
公开(公告)日:2016-07-07
申请号:US14901931
申请日:2014-07-03
Applicant: ArcelorMittal Investigacion y Desarrollo SL
Inventor: Franco Del Frate , Jean-Michel Mataigne , Jonas Stauddte , Astrid Perlade , Ian Alberto Zuazo-Rodriquez
IPC: C22C38/38 , C23C2/02 , C23C14/24 , C23C14/02 , C23C14/14 , C25D3/22 , C25D5/36 , C22C38/28 , C22C38/26 , C22C38/24 , C22C38/06 , C22C38/02 , C22C38/00 , C21D9/46 , C21D8/02 , C21D6/00 , B22D11/00 , C23C2/06
CPC classification number: C22C38/38 , B22D11/001 , B32B15/013 , B32B15/04 , B32B15/043 , B32B15/18 , C21D1/74 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0221 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0278 , C21D9/46 , C21D9/52 , C21D2211/001 , C21D2211/004 , C21D2211/005 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/18 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/34 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/58 , C23C2/02 , C23C2/04 , C23C2/06 , C23C2/12 , C23C2/26 , C23C2/28 , C23C2/40 , C23C14/02 , C23C14/14 , C23C14/16 , C23C14/24 , C23C14/58 , C23C14/5806 , C23C28/021 , C23C28/023 , C23C28/025 , C23C28/322 , C23C28/3225 , C23C30/00 , C23C30/005 , C25D3/22 , C25D5/36 , Y10T428/1259 , Y10T428/12611 , Y10T428/12618 , Y10T428/1266 , Y10T428/12667 , Y10T428/12757 , Y10T428/12799 , Y10T428/12951 , Y10T428/12958 , Y10T428/12965 , Y10T428/12972 , Y10T428/12979 , Y10T428/2495 , Y10T428/24967 , Y10T428/263 , Y10T428/264 , Y10T428/265
Abstract: A cold rolled and hot dip coated steel sheet presenting a tensile strength above 1000−50×Al MPa, a uniform elongation above 15% and a low density is provided. The steel includes, by weight percent: 0.1≦C≦0.5%, 3.5≦Mn≦10.0%, 0≦Al≦9.0%, Si≦5.0%, Ti≦0.2%, V≦0.2%, Nb≦0.2%, S≦0.004%, P≦0.025%, 0.5≦Si+Al≦9.0%, B≦0.0035, Cr≦1%, The balance being Fe and impurities and the microstructure containing 25% to 90% of ferrite, 10% to 50% of austenite, kappa precipitates lower than 5% and martensite lower than 25%. The steel is able to be coated using total oxidation.
Abstract translation: 提供抗拉强度高于1000-50×Al MPa,均匀伸长率高于15%和低密度的冷轧和热浸镀钢板。 该钢包括以重量百分比计:0.1%和0.1%; C&NlE; 0.5%,3.5%和1%; Mn和nlE; 10.0%,0%和1%; Al和nlE; 9.0%Si和NlE; 5.0%Ti和NlE; 0.2% ,S≦̸ 0.004%,P≦̸ 0.025%,0.5≦̸ Si + Al≦̸ 9.0%,B≦̸ 0.0035,Cr≦̸ 1%,余量为Fe和杂质,微结构包含25%至90%的铁素体,10% 至50%的奥氏体,卡巴沉淀物低于5%,马氏体低于25%。 钢可以使用全氧化涂层。