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公开(公告)号：US20240337000A1
公开(公告)日：2024-10-10
申请号：US18580976
申请日：2022-07-14
发明人： Bernd Linke , Michael Belde
CPC分类号： C22C38/04 , C21D6/002 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C21D9/46 , C22C38/001 , C22C38/02 , C22C38/18 , C21D2211/001 , C21D2211/002 , C21D2211/003 , C21D2211/005 , C21D2211/008 , C21D2211/009
摘要： A process for producing a cold-rolled flat steel product having a bainitic base microstructure and a correspondingly cold-rolled flat steel product having a bainitic base microstructure.
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公开(公告)号：US11597986B2
公开(公告)日：2023-03-07
申请号：US17251302
申请日：2019-06-12
发明人： Manuela Irnich , Rainer Fechte-Heinen , Miriam Lange , Bernd Linke , Jan-Hendrik Rudolph , Richard G. Thiessen
IPC分类号： C22C38/04 , C22C38/02 , C22C38/00 , C22C38/20 , C22C38/22 , C22C38/32 , C22C38/40 , C21D8/04 , C23G1/00 , C22C38/06 , C23C2/06
摘要： The present invention relates to a flat steel product which has good deep-drawing ability, low edge-crack sensitivity and good bending behaviour. To this end, the flat steel product contains a steel which consists of (in wt %) 0.1-0.5% C, 1.0-3.0% Mn, 0.9-1.5% Si, up to 1.5% Al, up to 0.008% N, up to 0.020% P, up to 0.005% S, 0.01-1% Cr and optionally one or more of the following elements: up to 0.2% Mo, up to 0.01% B, up to 0.5% Cu, up to 0.5% Ni and optionally a total of 0.005-0.2% microalloying elements, the remainder being iron and unavoidable impurities, wherein 75
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公开(公告)号：US20210262069A1
公开(公告)日：2021-08-26
申请号：US17251302
申请日：2019-06-12
发明人： Manuela Irnich , Rainer Fechte-Heinen , Miriam Lange , Bernd Linke , Jan-Hendrik Rudolph , Richard G. Thiessen
IPC分类号： C22C38/04 , C22C38/02 , C22C38/06 , C22C38/00 , C22C38/20 , C22C38/22 , C22C38/32 , C22C38/40 , C21D8/04 , C23G1/00
摘要： A flat steel product consisting of (in wt %) 0.1-0.5% C, 1.0-3.0% Mn, 0.9-1.5% Si, ≤1.5% Al, ≤0.008% N, ≤0.020% P, ≤0.005% S, 0.01-1% Cr and optionally one or more of: ≤0.2% Mo, ≤0.01% B, ≤0.5% Cu, ≤0.5% Ni and optionally a total of 0.005-0.2% microalloying elements, the remainder iron and unavoidable impurities. The steel has a structure consisting of ≥80 area % martensite, where ≥75 area % is tempered and ≤25 area % is non-tempered, ≥5 volume % residual austenite, 0.5-10 area % ferrite, ≤5 area % bainite, and carbides with a length of ≤250 nm, wherein in the phase boundary between tempered martensite and residual austenite, there is a low-Mn ferrite seam having a width of 4·12 nm and a Mn content of ≤50% of the average Mn content. Also, a method for producing the flat steel in which the structural characteristics of the flat steel product are set by suitable heat treatment.
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公开(公告)号：US20210189517A1
公开(公告)日：2021-06-24
申请号：US17057299
申请日：2018-05-22
发明人： Thomas Gerber , Ilse Heckelmann , Bernd Linke
IPC分类号： C21D9/46 , C21D8/02 , C21D1/673 , C21D1/19 , C21D6/00 , C22C38/54 , C22C38/50 , C22C38/48 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/46
摘要： A sheet metal part having a tensile strength Rm≥1000 MPa and a bending angle >70° formed from a flat steel product including, in % by weight: C: 0.10-0.30%, Si: 0.5-2.0%, Mn: 0.5-2.4%, Al: 0.01-0.2%, Cr: 0.005-1.5%, P: 0.01-0.1%, and optionally one or more of Ti, Nb, V, B, Ni, Cu, Mo, and W, with Ti: 0.005-0.1%, Nb: 0.005-0.1%, V: 0.001-0.2%, B: 0.0005-0.015%, Ni: 0.05-0.4%, Cu: 0.01-0.8%, Mo: 0.01-1.0&, and W: 0.001-1.0%, and remainder iron and unavoidable impurities, wherein the structure of the sheet metal part is 40-100% by area plate-shaped bainite, 70-95% of which is made of ferrite, 2-30% of high carbon phases that are plate-shaped with the remainder made up of other components and the remainder of the structure consists of
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