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公开(公告)号：US12031201B2
公开(公告)日：2024-07-09
申请号：US17614623
申请日：2020-05-29
IPC分类号： C22C18/00 , B32B15/01 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/60 , C25D3/22
CPC分类号： C22C38/32 , B32B15/013 , C22C18/00 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/60 , C25D3/22
摘要： The present invention relates to a plated steel sheet for hot stamping comprising a steel sheet and a Zn—Ni plating layer formed on at least one surface of the steel sheet, wherein the Zn—Ni plating layer has an Ni concentration of 8 mass % or more, a plating deposition amount of 10 g/m2 or more and 90 g/m2 or less per surface, and an average grain size of 50 nm or more, and a difference between a diffraction peak of the Zn—Ni plating layer after heat treating the plated steel sheet for hot stamping at 200° C. for 1 hour, and a diffraction peak of the Zn—Ni plating layer before heat treating it, is 0.3° or less.
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公开(公告)号：US11965250B2
公开(公告)日：2024-04-23
申请号：US17636486
申请日：2020-08-28
摘要： A hot stamped steel includes a base material, a plated layer that is formed on a surface of the base material, and an oxide film that is formed on a surface of the plated layer; chemical composition of the plated layer contains 20.00 to 45.00 mass % of Al, 10.00 to 45.00 mass % of Fe, 4.50 to 15.00 mass % of Mg, 0.10 to 3.00 mass % of Si, 0.05 to 3.00 mass % of Ca, 0 to 0.50 mass % of Sb, 0 to 0.50 mass % of Pb, 0 to 1.00 mass % of Cu, 0 to 1.00 mass % of Sn, 0 to 1.00 mass % of Ti, 0 to 0.50 mass % of Sr, 0 to 1.00 mass % of Cr, 0 to 1.00 mass % of Ni, and 0 to 1.00 mass % of Mn with a remainder of Zn and impurities; and chemical composition of the oxide film contains 20.0 to 55.0 at % of Mg, 0.5 to 15.0 at % of Ca, 0 to 15.0 at % of Zn, and 0 at % or more and less than 10.0 at % of Al with a remainder of O and a total of 5.0 at % or less of impurities, and the adhesion amount of the oxide film per one surface is in a range of 0.01 to 10 g/m2.
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公开(公告)号：US11692249B2
公开(公告)日：2023-07-04
申请号：US17802583
申请日：2020-02-27
发明人： Takuya Mitsunobu , Takehiro Takahashi , Jun Maki
CPC分类号： C22C30/06 , B32B15/013 , C23C2/06
摘要： A hot stamped body comprising a steel base material and an Al—Zn—Mg-based plating layer formed on a surface of the steel base material, wherein the plating layer has a predetermined chemical composition, the plating layer comprises an interfacial layer positioned at an interface with the steel base material and containing Fe and Al and a main layer positioned on the interfacial layer, the main layer comprises, by area ratio, 10.0 to 85.0% of an Mg—Zn containing phase and 15.0 to 90.0% of an Fe—Al containing phase, the Mg—Zn containing phase comprises at least one selected from the group consisting of an MgZn phase, Mg2 Zn3 phase, and MgZn2 phase, and the Fe—Al containing phase comprises at least one of an FeAl phase and Fe—Al—Zn phase and an area ratio of the Fe—Al—Zn phase in the main layer is 10.0% or less.
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公开(公告)号：US11634790B2
公开(公告)日：2023-04-25
申请号：US17434988
申请日：2020-04-16
IPC分类号： C22C18/04 , C23C2/06 , C23C2/02 , B32B15/01 , C23C2/40 , C23C28/02 , C22C18/00 , C23C28/00 , C23C2/28 , C23C2/26 , C23C30/00 , B32B15/04 , B32B15/18 , C22C21/00 , C23C2/12 , C22C38/06 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/00
摘要： A plated steel sheet includes: a steel sheet; and a plating layer that is formed on at least a part of a surface of the steel sheet, in which a chemical composition of the plating layer includes, by mass %, Al: more than 5.00% and 35.00% or less, Mg: 3.00% to 15.00%, Si: 0% to 2.00%, Ca: 0% to 2.00%, and a remainder of Zn and impurities, in which in a cross section of the plating layer in a thickness direction, the area ratio of a lamellar structure in which an (Al—Zn) phase and a MgZn2 phase are arranged in layers is 10% to 90%, a lamellar spacing of the lamellar structure is 2.5 μm or less, and the area ratio of an (Al—Zn) dendrite is 35% or less.
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公开(公告)号：US11352682B2
公开(公告)日：2022-06-07
申请号：US17254714
申请日：2019-07-05
IPC分类号： C22C38/04 , C25D5/12 , H01M50/124 , H01M50/119 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/06 , C25D3/12
摘要： A surface-treated steel sheet of the present invention includes a base steel sheet and a Ni—Co—Fe alloy-plated layer on at least one surface of the base steel sheet, in which, in the alloy-plated layer, a Ni coating weight is 7.1 to 18.5 g/m2, a Co coating weight is 0.65 to 3.6 g/m2, and a total of the Ni coating weight and the Co coating weight is in a range of 9.0 to 20.0 g/m2. In a surface layer of the alloy-plated layer, a Co concentration is in a range of 20 to 60 atom %, and a Fe concentration is in a range of 5 to 30 atom %. In the alloy-plated layer, a region having a thickness of 2 μm or more, in which a total of a Ni concentration and the Co concentration is 10 atom % or more and the Fe concentration is 5 atom % or more, is present. The base steel sheet has a predetermined chemical composition, and a ferrite grain size number is 10 or more.
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公开(公告)号：US12116688B2
公开(公告)日：2024-10-15
申请号：US17776465
申请日：2019-12-20
摘要： A Ni-plated steel sheet includes a base steel sheet and a Ni-based coating layer that is disposed on a surface of the base steel sheet. The distribution of carbon concentration in a depth direction obtained by performing GDS analysis on the Ni-plated steel sheet has a peak indicating the carbon concentration that is equal to or more than twice the carbon concentration of a thickness middle portion of the base steel sheet in the vicinity of an interface between the base steel sheet and the Ni-based coating layer.
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公开(公告)号：US11795560B2
公开(公告)日：2023-10-24
申请号：US17611848
申请日：2020-05-29
CPC分类号： C25D3/562 , C22C18/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C25D5/50 , Y10T428/12611
摘要： The present invention relates to a hot stamped body comprising a steel sheet and a plating layer formed on at least one surface of the steel sheet, wherein the plating layer is comprised of a ZnO region present on a surface side of the plating layer and having an oxygen concentration of 10 mass % or more and an Ni—Fe—Zn alloy region present on a steel sheet side of the plating layer and having an oxygen concentration of less than 10 mass %, and an average concentration of a total of Fe, Mn and Si in the ZnO region is 5 mass % or more and 30 mass % or less.
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公开(公告)号：US11794449B2
公开(公告)日：2023-10-24
申请号：US17253322
申请日：2019-07-05
IPC分类号： B32B15/01 , C25D3/12 , C25D5/12 , C21D8/00 , C21D8/02 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C25D3/20 , H01M50/10
CPC分类号： B32B15/013 , C21D8/005 , C21D8/0236 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C25D3/12 , C25D3/20 , C25D5/12 , H01M50/10 , C21D2211/005
摘要： A surface-treated steel sheet of the present invention includes a base steel sheet and a Ni—Co—Fe alloy-plated layer on at least one surface of the base steel sheet, in which, in the alloy-plated layer, a Ni coating weight is 7.1 to 32.5 g/m2, a Co coating weight is 0.65 to 5.2 g/m2, and a total of the Ni coating weight and the Co coating weight is in a range of 9.0 to 35.0 g/m2. In an outermost layer of the alloy-plated layer, a Co concentration is in a range of 20 to 60 atom %, and a Fe concentration is in a range of 5 to 30 atom %. In the alloy-plated layer, a region having a thickness of 2 μm or more, in which a total of a Ni concentration and the Co concentration is 10 atom % or more and the Fe concentration is 5 atom % or more, is present, and the base steel sheet has a predetermined chemical composition, and a ferrite grain size number is 9.0 or more.
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公开(公告)号：US11773503B2
公开(公告)日：2023-10-03
申请号：US17777022
申请日：2019-12-20
CPC分类号： C25D5/50 , C25D3/12 , Y10T428/12937
摘要： A Ni-plated steel sheet includes a base steel sheet and a Ni-based coating layer that is disposed on a surface of the base steel sheet. The Ni-based coating layer includes a Fe—Ni alloy region that is formed on the surface of the base steel sheet. The Fe—Ni alloy region includes a mixed phase composed of a bcc phase and an fcc phase, and a component of the Fe—Ni alloy region includes 5 mass % or more of Fe and a remainder including 90 mass % or more of Ni.
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公开(公告)号：US11697266B2
公开(公告)日：2023-07-11
申请号：US17435613
申请日：2020-04-16
IPC分类号： B32B15/01 , C22C38/04 , C22C38/02 , C22C18/00 , C23C2/06 , C23C2/20 , C23C2/28 , C23C2/40 , C22C18/04 , C23C2/02 , C23C28/02 , C23C2/26 , C23C30/00 , C23C2/12 , B32B15/04 , B32B15/18 , C23C2/04 , C22C38/00
CPC分类号： B32B15/013 , B32B15/012 , B32B15/04 , B32B15/043 , B32B15/18 , C22C18/00 , C22C18/04 , C22C38/02 , C22C38/04 , C23C2/02 , C23C2/04 , C23C2/06 , C23C2/12 , C23C2/20 , C23C2/26 , C23C2/28 , C23C2/40 , C23C28/02 , C23C28/023 , C23C28/025 , C23C30/00 , C23C30/005 , C22C38/00 , Y10T428/12757 , Y10T428/12792 , Y10T428/12951 , Y10T428/12958 , Y10T428/12972 , Y10T428/12979
摘要： A plated steel includes: a steel; and a plating layer that is provided on a surface of the steel, in which the plating layer includes, by mass %, Al: 5.00% to 35.00%, Mg: 2.50% to 13.00%, Fe: 5.00% to 40.00%, Si: 0% to 2.00%, Ca: 0% to 2.00%, and a remainder of Zn and impurities, and in a cross section of the plating layer, the area fraction of a Zn solid-solution Fe2Al5 phase in which 5% or more of Zn is solid-soluted is 10% to 60% and the area fraction of a MgZn2 phase is 10% to 90%.
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