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公开(公告)号：US20240309484A1
公开(公告)日：2024-09-19
申请号：US18670943
申请日：2024-05-22
申请人： ArcelorMittal
CPC分类号： C21D9/46 , B32B15/012 , C23C2/12 , C23C2/26 , C23C2/40 , Y10T428/12389 , Y10T428/12396 , Y10T428/12757
摘要： A hot stamped coated steel product, the hot stamped coated steel product comprising: a base steel; and a coating having a thickness of including, proceeding from the base steel outwards: (a) an interdiffusion layer, (b) an intermediate layer, (c) an intermetallic layer, and (d) a superficial layer, the base steel having a composition comprising: 0.15%
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公开(公告)号：US20240110256A1
公开(公告)日：2024-04-04
申请号：US18537158
申请日：2023-12-12
申请人： ArcelorMittal
CPC分类号： C21D9/46 , B32B15/012 , C23C2/12 , C23C2/26 , C23C2/40 , Y10T428/12389 , Y10T428/12396 , Y10T428/12757
摘要： A method of forming a hot stamped coated steel product includes providing a precoated steel strip, the precoated steel strip including a base steel having a first side and a second side, and a precoating on at least one of the first side and the second side, the precoating being made of aluminum or an aluminum alloy; heating the precoated steel strip in a furnace, wherein the precoated strip experiences a temperature rise at a heating rate (Vc) between 4° and 12° C./s, wherein Vc is a mean heating rate between 20 and 700 C; removing the heated precoated steel strip from the furnace; and then hot stamping the precoated strip to deform the precoated steel strip into a hot stamped coated steel product, the hot stamped coated steel product having a coating including, proceeding from the base steel outwards: (a) an interdiffusion layer, (b) an intermediate layer, (c) an intermetallic layer, and (d) a superficial layer.
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