公开(公告)号：US20130022490A1

公开(公告)日：2013-01-24

申请号：US13634614

申请日：2011-03-22

申请人： Hideo Hata ,  Toshio Murakami ,  Yukihiro Utsumi

发明人： Hideo Hata ,  Toshio Murakami ,  Yukihiro Utsumi

IPC分类号： C22C38/06 ,  C22C38/04 ,  C22C38/38 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/02 ,  C22C38/08

CPC分类号： C21D8/0226 ,  C21D1/20 ,  C21D8/0447 ,  C21D8/0463 ,  C21D8/0473 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/38

摘要： Disclosed is a high-strength steel plate with excellent warm workability that has a component composition comprising, in mass %, 0.05 to 0.4% C, 0.5 to 3% Si+Al, 0.5 to 3% Mn, no more than 0.15% P (not including 0%), and no more than 0.02% S (including 0%), with the remainder comprising iron and impurities, and a composition that includes a total of 45 to 80% martensite and/or bainitic ferrite in terms of the area ratio relative to the entire composition, 5 to 40% polygonal ferrite in terms of the area ratio relative to the entire composition, and 5 to 20% retained austenite in terms of the area ratio relative to the entire composition, wherein the C concentration (CγR) within said residual austenite is in the range of 0.6 mass % to less than 1.0 mass %, and that furthermore may include bainite. In the high-strength steel plate, TRIP effects are achieved to the fullest extent in warm working, and increased ductility over prior steel plates is reliably achieved.

摘要翻译： 公开了一种具有优异的温加工性的高强度钢板，其具有以质量％计含有0.05〜0.4％的C，0.5〜3％的Si + Al，0.5〜3％的Mn，0.15％以下的P（ 不包括0％）和不超过0.02％的S（包括0％），剩余部分包括铁和杂质，以及包括总共45-80％的马氏体和/或贝氏体铁素体的组合物的面积 相对于整个组合物的比率，相对于组合物的面积比为5〜40％的多边形铁素体，相对于组合物的面积比为5〜20％的残留奥氏体，其中C浓度 ）在0.6质量％以下且小于1.0质量％的范围内，并且还可以包括贝氏体。 在高强度钢板中，TRIP效果在温暖加工中达到最大程度，并且可靠地实现了比现有钢板更高的延展性。

公开(公告)号：US08128762B2

公开(公告)日：2012-03-06

申请号：US12498712

申请日：2009-07-07

申请人： Seiko Watanabe

发明人： Seiko Watanabe

IPC分类号： C22C38/14 ,  C22C38/12 ,  C22C38/32 ,  C22C38/44 ,  C21D8/00

CPC分类号： C22C38/04 ,  C21D1/26 ,  C21D6/005 ,  C21D8/0226 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0447 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/12 ,  C22C38/14

摘要： Disclosed is a high-strength steel sheet which has a predetermined component composition, structurally has a ferrite matrix structure and bainitic and martensitic second phase structures, and has a ferrite fraction of from 50 to 86 percent by area, a bainite fraction of from 10 to 30 percent by area, and a martensite fraction of from 4 to 20 percent by area, relative to the entire structure, in which the bainite area fraction is larger than the martensite area fraction, the ferrite has an average grain size of 2.0 to 5.0 μm, and the ratio of the average ferrite hardness (Hv) to the tensile strength (MPa) of the steel sheet is equal to or more than 0.25. The steel sheet excels both in TS-EL balance and TS-λ balance at high strengths on the order of 590 to 780 MPa.

摘要翻译： 公开了一种具有预定组分组成的高强度钢板，结构上具有铁素体基体结构和贝氏体和马氏体二相结构，并且铁素体部分为50至86％的面积，贝氏体分数为10至 相对于贝氏体面积率大于马氏体面积率的整体结构，相对于整个结构，面积为30％的马氏体分数为4〜20％，铁素体的平均粒径为2.0〜5.0μm ，钢板的平均铁素体硬度（Hv）与拉伸强度（MPa）的比等于或大于0.25。 钢板在TS-EL平衡和TS-λ平衡方面均优于590至780MPa的高强度。

公开(公告)号：US20110030854A1

公开(公告)日：2011-02-10

申请号：US12865527

申请日：2009-01-29

申请人： Hiroshi Matsuda ,  Reiko Mizuno ,  Yoshimasa Funakawa ,  Yasushi Tanaka ,  Tatsuya Nakagaito ,  Saiji Matsuoka

发明人： Hiroshi Matsuda ,  Reiko Mizuno ,  Yoshimasa Funakawa ,  Yasushi Tanaka ,  Tatsuya Nakagaito ,  Saiji Matsuoka

IPC分类号： C21D11/00 ,  C22C38/00 ,  C21D8/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/12 ,  C22C38/02 ,  C22C37/06 ,  C22C38/60

CPC分类号： C23C2/06 ,  C21D1/25 ,  C21D6/005 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0447 ,  C21D8/0468 ,  C21D2211/002 ,  C21D2211/004 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/04 ,  C23C2/02 ,  C23C2/28

摘要： A high strength steel sheet has a tensile strength of 900 MPa or higher that can achieve both high strength and good formability and a composition including, on a mass basis, C: 0.1% or more and 0.3% or less; Si: 2.0% or less; Mn: 0.5% or more and 3.0% or less; P: 0.1% or less; S: 0.07% or less; Al: 1.0% or less; and N: 0.008% or less, with the balance Fe and incidental impurities. The steel sheet microstructure includes, on an area ratio basis, 5% or more and 80% or less of ferrite, 15% or more of autotempered martensite, 10% or less of bainite, 5% or less of retained austenite, and 40% or less of as-quenched martensite; the mean hardness of the autotempered martensite is HV≦700; and the mean number of precipitated iron-based carbide grains each having a size of 5 nm or more and 0.5 μm or less and included in the autotempered martensite is 5×104 or more per 1 mm2.

摘要翻译： 高强度钢板的拉伸强度为900MPa以上，能够实现高强度和良好的成形性，并且以质量计含有C：0.1％以上且0.3％以下的组合物。 Si：2.0％以下; Mn：0.5％以上3.0％以下， P：0.1％以下; S：0.07％以下 Al：1.0％以下; N：0.008％以下，余量为Fe和杂质。 钢板微结构以面积比为基准，5％以上且80％以下的铁素体，15％以上的自回火马氏体，10％以下的贝氏体，5％以下的残留奥氏体和40质量％ 或更少的淬火马氏体; 自回火马氏体的平均硬度为HV＆nlE; 700; 并且包含在自回火马氏体中的尺寸为5nm以上且0.5μm以下的析出铁素体的平均粒子数为5×104以上。

公开(公告)号：US20100252147A1

公开(公告)日：2010-10-07

申请号：US12742323

申请日：2008-11-20

申请人： Toshio Murakami ,  Hideo Hata ,  Akira Ibano ,  Kenji Saito

发明人： Toshio Murakami ,  Hideo Hata ,  Akira Ibano ,  Kenji Saito

IPC分类号： C22C38/22 ,  C22C38/00 ,  C22C38/04 ,  C22C38/16 ,  C22C38/18 ,  C22C38/08

CPC分类号： C22C38/02 ,  C21D8/0405 ,  C21D8/0447 ,  C21D9/46 ,  C21D9/48 ,  C21D2211/003 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/06

摘要： The invention provides a high-strength cold-rolled steel sheet which is improved in elongation and stretch-flangeability and exhibits more excellent formability. The high-strength cold-rolled steel sheet has a composition which contains by mass C: 0.03 to 0.30%, Si: 0.1 to 3.0%, Mn: 0.1 to 5.0%, P: 0.1% or below, S: 0.005% or below, N: 0.01% or below, and Al: 0.01 to 1.00% with the balance consisting of iron and unavoidable impurities. The high-strength cold-rolled steel sheet has a structure which comprises at least 40% (up to 100% inclusive) in terms of area fraction of tempered martensite having a hardness of 300 to 380 Hv and the balance ferrite. The cementite particles in the tempered martensite take such dispersion that 10 or more cementite particles having equivalent-circle diameters of 0.02 to less than 0.1 μm are present per one μm2 of the tempered martensite and three or fewer cementite particles having equivalent-circle diameters of 0.1 μm or above are present per one μm2 of the tempered martensite.

摘要翻译： 本发明提供了一种提高伸长率和拉伸凸缘性的高强度冷轧钢板，并且具有更优异的成形性。 高强度冷轧钢板的组成为C：0.03〜0.30％，Si：0.1〜3.0％，Mn：0.1〜5.0％，P：0.1％以下，S：0.005％以下 ，N：0.01％以下，Al：0.01〜1.00％，余量由铁和不可避免的杂质构成。 高强度冷轧钢板具有以硬度为300〜380Hv的回火马氏体的面积率和平衡铁素体为至少40％（含有100％以上）的结构。 回火马氏体中的渗碳体颗粒采用这样的分散体，每1μm回火马氏体和三个或更少个当量圆直径为0.1的渗碳体颗粒存在10个或更多个当量圆直径为0.02至小于0.1μm的渗碳体颗粒 每1μm2的回火马氏体存在1μm以上。

公开(公告)号：US20090148721A1

公开(公告)日：2009-06-11

申请号：US12331889

申请日：2008-12-10

申请人： Akira HIBINO ,  Koji Ichitani

发明人： Akira HIBINO ,  Koji Ichitani

IPC分类号： B32B15/01 ,  C22F1/04 ,  B21D37/16

CPC分类号： C21D8/0447 ,  B21D22/20 ,  C21D2221/00 ,  C22C21/02 ,  C22C21/08 ,  C22F1/05 ,  Y10T428/12736

摘要： An Al—Mg—Si based aluminum alloy sheet having undergone normal-temperature aging (or being in a underaged state) after a solution treatment thereof is, before press forming, subjected to a heating treatment (partial reversion heating treatment) in which the alloy sheet is partially heated to a temperature in the range of 150 to 350° C. for a time of not more than 5 minutes so that the difference in strength (difference in 0.2% proof stress) between the heated part and the non-heated part will be not less than 10 MPa. The alloy sheet thus treated is subjected to cold press forming in the condition where the heated part with low strength is put in contact with a wrinkle holding-down appliance of the press and the non-heated part with high strength is put in contact with the shoulder part (radius) of the punch. In the partial reversion heating treatment, the temperature rise rate and the cooling rate in cooling down to 100° C. or below are set to be not less than 30° C./min. Further, the period for which the alloy sheet is left to stand at normal temperature after the partial reversion heating treatment until the cold press forming is set to be within 30 days.

摘要翻译： 经过固溶处理后，经历了常温老化（或处于未成熟状态）的Al-Mg-Si系铝合金板在进行压制成形之前，进行加热处理（部分回复加热处理），其中合金 将片材部分地加热到150-350℃的温度不超过5分钟的时间，使得加热部分和未加热部分之间的强度差（0.2％屈服应力差） 将不会低于10MPa。 将这样处理的合金薄片进行冷压成型，其中，将具有低强度的加热部件与冲压机的起皱装置接触，并且将具有高强度的非加热部件与 肩部（半径）的冲头。 在部分回复加热处理中，将冷却至100℃以下的升温速度和冷却速度设定为30℃/分钟以上。 此外，在部分逆转加热处理直到冷压成型之后，合金板在常温下放置的时间段设定在30天以内。

公开(公告)号：US20080251161A1

公开(公告)日：2008-10-16

申请号：US11910013

申请日：2006-03-29

申请人： Takahiro Kashima ,  Yoichi Mukai ,  Hiroshi Akamizu ,  Koichi Sugimoto

发明人： Takahiro Kashima ,  Yoichi Mukai ,  Hiroshi Akamizu ,  Koichi Sugimoto

IPC分类号： C22C38/22

CPC分类号： C22C38/02 ,  C21D6/00 ,  C21D6/002 ,  C21D8/0405 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0447 ,  C21D9/46 ,  C21D9/48 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C22C38/04 ,  C22C38/06 ,  C23C2/02 ,  C23C2/06 ,  Y10T428/12799

摘要： A high-strength cold-rolled steel sheet exhibiting an excellent strength-workability balance, including in percent by mass: 0.10-0.25% of C; 1.0-2.0% of Si; 1.5-3.0% of Mn; 0.01% or less (not including 0%) of P; 0.005% or less (not including 0%) of S; 0.01-3.0% of Al; and remaining part consisting of iron and inevitable impurities, wherein the space factor of bainitic ferrite to the entire structure is 70% or more, the space factor of residual austenite to the entire structure is 5-20%, the hardness (HV) is 270 or greater, and the half-value width of an X-ray diffraction peak on a (200)-surface of α-iron is 0.220 degrees or smaller.

摘要翻译： 表现出优异的强度加工性平衡的高强度冷轧钢板，包括质量百分比：0.10-0.25％的C; 1.0-2.0％的Si; 1.5-3.0％的Mn; 0.01％以下（不含0％）P; 0.005％以下（不含0％）S; 0.01-3.0％的Al; 剩余部分由铁和不可避免的杂质组成，其中贝氏体铁素体对整个结构的空间因子为70％以上，残余奥氏体相对于整个结构的空间因子为5-20％，硬度（HV）为270 以上，α铁的（200）表面的X射线衍射峰的半值宽度为0.220度以下。

公开(公告)号：US06191921B1

公开(公告)日：2001-02-20

申请号：US09494104

申请日：2000-01-28

申请人： Kevin Hanrahan ,  Ryan Schmidt

发明人： Kevin Hanrahan ,  Ryan Schmidt

IPC分类号： G11B582

CPC分类号： C21D8/0447 ,  C21D2221/00 ,  Y10S148/902

摘要： A base plate for a suspension assembly in a hard disk drive wherein the base plate has a hardened flange and soft hub. The base plate is stamped in a progressive die in a sequence of forging and coining operations. The base plate is subsequently fully annealed to allow the material to yield at a low stress level so that the hub will create a press fit against the inner wall of an actuator arm boss hole. The base plate is passed through a secondary coining operation following the annealing step to work-harden the flange portion only. The result is a base plate with a flange portion that is hardened and a hub portion that is softer than the flange portion. The advantage is that the hardened flange is more resistant to deformation of a load beam welded thereto and the hub is more disposed to plastically deform and harden during swaging which is desirable for maintaining a press fit.

摘要翻译： 一种用于硬盘驱动器中的悬挂组件的基板，其中所述基板具有硬化凸缘和柔性毂。 基板以锻造和压印操作的顺序冲压在渐进式模具中。 基板随后完全退火，以允许材料在低应力水平下屈服，使得毂将产生压配合到致动器臂凸台孔的内壁上。 在退火步骤之后，基板通过二次压印操作，以仅对凸缘部分进行加工硬化。 结果是具有硬化的凸缘部分和比凸缘部分更柔软的毂部的基板。 优点在于，硬化的凸缘更能抵抗焊接在其上的负载梁的变形，并且毂更多地设置成在型锻期间塑性变形和硬化，这对于保持压配合是理想的。

公开(公告)号：US2165368A

公开(公告)日：1939-07-11

申请号：US6486836

申请日：1936-02-20

申请人： COLD METAL PROCESS CO

发明人： GOSS NORMAN P

IPC分类号： C21D8/04

CPC分类号： C21D8/0468 ,  C21D8/0436 ,  C21D8/0447 ,  C21D8/0478

公开(公告)号：US2105426A

公开(公告)日：1938-01-11

申请号：US72455134

申请日：1934-05-08

申请人： MCMANUS CHARLES E

发明人： MCMANUS CHARLES E

IPC分类号： C21D1/76 ,  C21D8/04

CPC分类号： C21D8/0447 ,  C21D1/76 ,  C21D8/0478

公开(公告)号：US11993825B2

公开(公告)日：2024-05-28

申请号：US17298782

申请日：2019-12-02

申请人： POSCO

发明人： Seong-Woo Kim ,  Jin-Keun Oh ,  Sang-Heon Kim ,  Sang-Bin Han

IPC分类号： B32B15/01 ,  C21D6/00 ,  C21D8/04 ,  C21D9/48 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32 ,  C23C2/02 ,  C23C2/12 ,  C23C2/28 ,  C23C2/40

CPC分类号： C21D9/48 ,  B32B15/012 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0405 ,  C21D8/0421 ,  C21D8/0447 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32 ,  C23C2/02 ,  C23C2/12 ,  C23C2/28 ,  C23C2/29 ,  C23C2/40

摘要： The present invention pertains to a hot press forming member having excellent resistance to hydrogen embrittlement, and a method for manufacturing same. An aspect of the present invention provides a hot press forming member having excellent resistance to hydrogen embrittlement, the hot press forming member comprising a base steel plate and an alloy-plated layer formed on the surface of the base steel plate, wherein the alloy-plated layer contains pores such that pores having a size of 5 μm or less constitute 3-30% of the surface area of the alloy-plated layer as viewed in a cross-section taken in the thickness direction of the member.