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公开(公告)号：US10272644B2
公开(公告)日：2019-04-30
申请号：US15105679
申请日：2014-12-19
IPC分类号： B32B15/01 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/38 , C22C38/28 , C22C38/00 , C22C38/26 , C22C38/32
摘要： A flat steel product is disclosed which is particularly suitable for the production of components for motor vehicle bodies by press-hardening, and which has insensitivity to cracking coupled with increased strength and has sufficient suitability for welding for incorporation into a welded construction. This combination of properties is achieved in accordance with the invention by virtue of the flat steel product having a core layer consisting of a steel alloyed with Mn, B and at least 0.3% by weight of C and having a tensile strength of more than 1500 MPa, and an outer layer cohesively bonded to the core layer. The C content of the outer layer is not more than 0.09% by weight. This flat steel product has, in the region of the outer layer, a tensile strength corresponding to not more than half the tensile strength of the steel of the core layer in the ready-hardened state, with the elongation A80 of the outer layer corresponding to at least 1.5 times the elongation A80 of the core layer in the ready-hardened state.
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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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3.发明申请Sheet Steel Product, A Steel Component Produced From Such a Sheet Steel Product, and Body for a Motor Vehicle 审中-公开板钢产品，由这种钢板产品生产的钢部件和机动车辆公开(公告)号：US20160311197A1
公开(公告)日：2016-10-27
申请号：US15105679
申请日：2014-12-19
IPC分类号： B32B15/01 , C22C38/28 , C22C38/00 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/32 , C22C38/26
CPC分类号： B32B15/011 , C22C38/002 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38
摘要： A flat steel product is disclosed which is particularly suitable for the production of components for motor vehicle bodies by press-hardening, and which has insensitivity to cracking coupled with increased strength and has sufficient suitability for welding for incorporation into a welded construction. This combination of properties is achieved in accordance with the invention by virtue of the flat steel product having a core layer consisting of a steel alloyed with Mn, B and at least 0.3% by weight of C and having a tensile strength of more than 1500 MPa, and an outer layer cohesively bonded to the core layer. The C content of the outer layer is not more than 0.09% by weight. This flat steel product has, in the region of the outer layer, a tensile strength corresponding to not more than half the tensile strength of the steel of the core layer in the ready-hardened state, with the elongation A80 of the outer layer corresponding to at least 1.5 times the elongation A80 of the core layer in the ready-hardened state.
摘要翻译： 公开了一种扁钢产品，其特别适用于通过加压硬化生产机动车辆的部件，并且其具有对增加的强度的破裂的不敏感性并且具有足够的焊接适合性以适用于焊接结构。 根据本发明，通过具有由与Mn，B合金的钢和至少0.3重量％C的钢构成的芯层的平坦钢产品实现了这种性能的组合，并且具有大于1500MPa的拉伸强度 ，和外层粘结在芯层上。 外层的C含量不超过0.09重量％。 该扁钢制品在外层的区域具有对应于在预硬化状态下芯层的钢的拉伸强度的不超过一半的拉伸强度，外层的伸长率A80对应于 在预硬化状态下至少1.5倍的芯层的伸长率A80。
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