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21.发明申请公开(公告)号：US20080175743A1
公开(公告)日：2008-07-24
申请号：US11885805
申请日：2006-03-31
CPC分类号： C22C38/04 , C21D6/005 , C21D8/0405 , C21D9/48 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C21D2211/009 , C22C38/06 , C23C2/02 , C23C2/28 , C23C28/02 , C23C28/023
摘要： An alloyed hot-dip galvanized steel sheet has a composition containing about 0.05 to about 0.25 wt % of C, about 0.5 wt % or less of Si, about 1 to about 3 wt % of Mn, about 0.1 wt % or less of P, about 0.01 wt % or less of S, about 0.1 to about 2 wt % of Al, and less than about 0.005 wt % of N, and satisfying the relations, Si+Al≧0.6 wt %, (0.0006×Al) wt %≦N≦(0.0058−0.0026×Al) wt %, and Al≦(1.25×C0.5−0.57×Si+0.625×Mn) wt %, the balance including Fe and inevitable impurities. The alloyed hot-dip galvanized steel sheet can be obtained without passing through a complicated process, has excellent surface appearance and anti-secondary work embrittlement and high strength, and is thus suitable for application to an automobile steel sheet.
摘要翻译： 合金化的热浸镀锌钢板具有C：0.05〜0.25重量％，Si：约0.5重量％以下，Mn：1〜3重量％，P：0.1重量％以下， 约0.01重量％或更少的S，约0.1至约2重量％的Al和小于约0.005重量％的N，并且满足Si + Al> = 0.6重量％，（0.0006×Al）wt％ = N <=（0.0058-0.0026×Al）wt％，Al <=（1.25×0.05×0.57×Si + 0.625×Mn）wt％，余量包括Fe和不可避免的杂质。 合金化的热浸镀锌钢板可以在不经过复杂工艺的情况下获得，具有优异的表面外观和抗二次加工脆性和高强度，因此适用于汽车钢板。
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公开(公告)号：US20080163961A1
公开(公告)日：2008-07-10
申请号：US11885804
申请日：2006-03-31
CPC分类号： C23C2/28 , B32B15/013 , C21D9/46 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/24 , C22C38/38 , C23C2/02
摘要： A galvannealed steel sheet contains, by % by mass, about 0.05 to about 0.25% of C, about 2.0% or less of Si, about 1 to about 3% of Mn, about 0.1% or less of P, about 0.01% or less of S, about 0.3 to about 2% of Al, less than about 0.005% of N, about 1% or less of Cr, about 1% or less of V, about 1% or less of Mo, less than about 0.005% of Ti, and less than about 0.005% of Nb, and satisfies the relations, Si +Al >0.6% and Cr +V +Mo =0.1 to 2%, the balance being Fe and inevitable impurities.
摘要翻译： 合金化热浸镀锌钢板以质量计含有约0.05〜约0.25％的C，约2.0％以下的Si，约1％至3％的Mn，约0.1％或更少的P，约0.01％或更少 的S，约0.3至约2％的Al，小于约0.005％的N，约1％或更少的Cr，约1％或更少的V，约1％或更少的Mo，小于约0.005％的 Ti和小于约0.005％的Nb，并且满足Si + Al> 0.6％和Cr + V + Mo = 0.1〜2％的关系，余量为Fe和不可避免的杂质。
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23.发明申请High-Strength Hot-Dip Galvanized Steel Sheet Excellent in Formability and Method for Producing Same 审中-公开高强度热浸镀锌钢板，成型性优良，生产方法相同公开(公告)号：US20090014098A1
公开(公告)日：2009-01-15
申请号：US11886622
申请日：2006-04-06
IPC分类号： C21D11/00 , C22C38/18 , C22C38/38 , C22C38/22 , C22C38/24 , C22C38/32 , C22C38/20 , C22C38/40
CPC分类号： C21D9/46 , B32B15/013 , C21D2211/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38 , C22C38/40 , C23C2/02 , C23C2/06 , C23C2/28 , C23F17/00
摘要： There is provided a high-strength hot-dip galvanized steel sheet having excellent formability, the steel sheet eliminating special pre-structure control and capable of being produced by using a hot-dip galvanized steel-sheet production line that is not capable of sufficiently ensuring an austempering time after annealing. A high-strength hot-dip galvanized steel sheet includes, on the basis of mass percent, 0.05-0.3% C, 1.4% or less (including 0%) Si, 0.08%-3% Mn, 0.003-0.1% P, 0.07% or less S, 0.1-2.5% Al, 0.1-0.5% Cr, and 0.007% or less N, Si+Al≧0.5%, and the balance being Fe and incidental impurities, wherein the steel sheet has a retained austenite content of 3% or more by volume fraction, and wherein the average aspect ratio of retained austenite grains is 2.5 or less.
摘要翻译： 提供了一种成形性优异的高强度热浸镀锌钢板，该钢板消除了特殊的预结构控制，并且能够通过使用不能充分确保的热浸镀锌钢板生产线来生产 退火后的奥氏体时间。 高强度热浸镀锌钢板以质量％计含有0.05-0.3％C，1.4％以下（包括0％）Si，0.08％-3％Mn，0.003-0.1％P，0.07 ％以下S，0.1〜2.5％的Al，0.1-0.5％的Cr和0.007％以下的N，Si + Al> = 0.5％，余量为Fe和附带的杂质，其中钢板的残余奥氏体含量 3体积％以上，残留奥氏体晶粒的平均纵横比为2.5以下。
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公开(公告)号：US09765413B2
公开(公告)日：2017-09-19
申请号：US13809953
申请日：2011-07-12
CPC分类号： C21D6/005 , B05D3/0218 , B05D3/12 , B32B15/013 , C21D6/008 , C21D9/46 , C21D2211/005 , C21D2211/008 , C22C1/02 , C22C38/00 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/40 , Y10T428/12965
摘要： A high-strength galvanized steel sheet with high yield ratio having excellent ductility and stretch flange formability, the steel sheet having a chemical composition containing, by mass %, C: 0.04% or more and 0.13% or less, Si: 0.9% or more and 2.3% or less, Mn: 0.8% or more and 2.4% or less, P: 0.1% or less, S: 0.01% or less, Al: 0.01% or more and 0.1% or less, N: 0.008% or less, and the balance being Fe and inevitable impurities and a microstructure including, in terms of area ratio, 94% or more of a ferrite phase and 2% or less of a martensite ferrite phase, wherein mean grain size of ferrite is 10 μm or less, Vickers hardness of ferrite is 140 or more, mean grain size of carbide particles existing at grain boundaries of ferrite is 0.5 μm or less, and aspect ratio of carbide particles existing at the grain boundaries of ferrite is 2.0 or less.
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25.发明申请HIGH-STRENGTH GALVANIZED STEEL SHEET HAVING EXCELLENT FORMABILITY AND SPOT WELDABILITY AND METHOD FOR MANUFACTURING THE SAME 审中-公开具有优异的可塑性和点焊性的高强度钢化片及其制造方法公开(公告)号：US20130048155A1
公开(公告)日：2013-02-28
申请号：US13522050
申请日：2011-01-18
CPC分类号： C23C2/06 , B32B15/013 , C21D8/0205 , C21D9/46 , C21D2211/002 , C21D2211/005 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/02 , C23C2/28
摘要： A high-strength galvanized steel sheet contains C: 0.04% or more and 0.10% or less, Si: 0.7% or more and 2.3% or less, Mn: 0.8% or more and 2.0% or less, P: 0.03% or less, S: 0.003% or less, Al: 0.1% or less, and N: 0.008% or less on a mass percent basis, and the remainder of iron and incidental impurities. The C content [C%] (% by mass) and the Si content [Si%] (% by mass) satisfy [C%]×[Si%]≦0.20. A ferrite phase constitutes 75% or more, a bainitic ferrite phase constitutes 1% or more, a pearlite phase constitutes 1% or more and 10% or less, and a martensite phase constitutes less than 5% on an area ratio basis. The area ratio of the martensite phase/(the area ratio of the bainitic ferrite phase + the area ratio of the pearlite phase) is 0.6 or less.
摘要翻译： 高强度镀锌钢板的C：0.04％以上且0.10％以下，Si：0.7％以上且2.3％以下，Mn：0.8％以上且2.0％以下，P：0.03％以下 ，S：0.003％以下，Al：0.1％以下，N：0.008％以下，剩余的铁和杂质。 C含量[C％]（质量％）和Si含量[Si％]（质量％）满足[C％]×[Si％]＆nlE; 0.20。 铁素体相构成75％以上，贝氏体铁素体相为1％以上，珠光体相为1％以上10％以下，马氏体相占面积比为5％以下。 马氏体相的面积比（贝氏体相的面积比+珠光体相的面积比）为0.6以下。
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26.发明申请公开(公告)号：US20120279617A1
公开(公告)日：2012-11-08
申请号：US13521078
申请日：2011-01-18
CPC分类号： C23C2/06 , B32B15/013 , C21D8/0205 , C21D9/46 , C21D2201/03 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/02 , C23C2/28
摘要： A steel sheet has the chemical composition containing, by mass %, C: 0.04 to 0.13%, Si: 0.9 to 2.3%, Mn: 0.8 to 1.8%, P: 0.1% or less, S: 0.01% or less, Al: 0.1% or less, N: 0.008% or less, the remainder being Fe and the inevitable impurities and a microstructure including, in terms of area ratio, a ferrite phase of 80% or more, a bainitic ferrite phase of 1.0% or more, a pearlite phase of 1.0 to 10.0%, and a martensite phase of 1.0% or more and less than 5.0%, wherein the mean grain size of ferrite is 14 μm or less, the mean grain size of martensite is 4 μm or less, the mean free path of martensite is 3 μm or more, the Vickers hardness of ferrite is 140 or more, and the relationship area ratio of martensite/(area ratio of bainitic ferrite+area ratio of pearlite) 0.6 is satisfied.
摘要翻译： 钢板的化学成分以质量％计含有C：0.04〜0.13％，Si：0.9〜2.3％，Mn：0.8〜1.8％，P：0.1％以下，S：0.01％以下，Al： 0.1％以下，N：0.008％以下，剩余部分为Fe和不可避免的杂质，以及以面积比计的铁素体相为80％以上，贝氏体铁素体相为1.0％以上的组织， 1.0〜10.0％的珠光体相，1.0％以上且小于5.0％的马氏体相，铁素体的平均粒径为14μm以下，马氏体的平均粒径为4μm以下， 马氏体的平均自由程为3μm以上，铁素体的维氏硬度为140以上，并且满足马氏体/（贝氏体铁素体的面积比+珠光体的面积比）0.6的关系面积比。
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公开(公告)号：US09617630B2
公开(公告)日：2017-04-11
申请号：US13640851
申请日：2011-04-11
IPC分类号： C23C2/02 , C21D8/02 , C21D9/46 , C23C2/06 , C23C2/28 , B32B15/01 , C21D6/00 , C22C38/00 , C22C38/04 , C22C38/02 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/22 , C22C38/28 , C22C38/32 , C22C38/38
CPC分类号： C21D9/46 , B32B15/013 , C21D1/34 , C21D6/001 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D2211/002 , C21D2211/008 , C22C18/04 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/22 , C22C38/28 , C22C38/32 , C22C38/38 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/285 , C23C2/40 , Y02P10/212
摘要： A high-strength galvanized steel sheet having excellent formability and crashworthiness, including a component composition containing 0.03% to 0.13% C, 1.0% to 2.0% Si, 2.4% to 3.5% Mn, 0.001% to 0.05% P, 0.0001% to 0.01% S, 0.001% to 0.1% Al, 0.0005% to 0.01% N, and 0.0003% to 0.01% B on a mass basis, the remainder being Fe and unavoidable impurities, and a microstructure containing a tempered martensitic phase and a bainitic phase such that the sum of an area fraction of the tempered martensitic phase and an area fraction of the bainitic phase is 30% or more (the area fraction of the martensitic phase is 30% or more in the absence of the bainitic phase), wherein a distance of closest approach of the tempered martensitic phase is 10 μm or less and the contents of C, Mn, and B satisfy (1): (% Mn)+1000×(% B)≧35×(% C) (1).
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28.发明授权公开(公告)号：US09580779B2
公开(公告)日：2017-02-28
申请号：US14342550
申请日：2012-09-10
申请人： Yoshiyasu Kawasaki , Hiroshi Hasegawa , Tatsuya Nakagaito , Shinjiro Kaneko , Yasunobu Nagataki
发明人： Yoshiyasu Kawasaki , Hiroshi Hasegawa , Tatsuya Nakagaito , Shinjiro Kaneko , Yasunobu Nagataki
IPC分类号： C22C38/38 , C23C2/02 , C23C2/06 , C23C2/28 , C21D9/46 , C22C38/00 , C22C38/04 , C22C38/58 , C22C38/02 , C22C38/06 , C22C38/12 , C22C38/14 , C21D8/02 , C22C38/08 , C22C38/24 , C23C2/40 , B32B15/01 , C22C38/16 , C22C38/60 , B21B3/00 , B21B1/22
CPC分类号： C22C38/38 , B21B3/00 , B21B2001/221 , B21B2001/225 , B21B2265/14 , B32B15/013 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0247 , C21D8/0263 , C21D9/46 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/24 , C22C38/58 , C22C38/60 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40
摘要： A method for manufacturing the high strength steel sheet having excellent formability includes hot-rolling a steel slab having a chemical composition containing, by mass %, C: 0.03% or more and 0.35% or less, Si: 0.5% or more and 3.0% or less, Mn: 3.5% or more and 10.0% or less, P: 0.1% or less, S: 0.01% or less, N: 0.008% or less and the balance comprising Fe and inevitable impurities, coiling the hot-rolled steel sheet at a temperature range of the Ar1 transformation point to the Ar1 transformation point+(the Ar3 transformation point−the Ar1 transformation point)/2, cooling the coiled steel sheet down to 200° C. or lower, heating and holding the cooled steel sheet at a temperature range of the Ac1 transformation point−200° C. to the Ac1 transformation point for 30 minutes or more, pickling the heated steel sheet, cold-rolling the pickled steel sheet under the condition that the rolling reduction is 20% or more, and heating and holding the cold-rolled steel sheet at a temperature range of the Ac1 transformation point to the Ac1 transformation point+(the Ac3 transformation point−the Ac1 transformation point)/2 for 30 seconds or more.
摘要翻译： 制造成型性优异的高强度钢板的制造方法包括：将以质量％计含有C：0.03％以上且0.35％以下的化学组成的钢坯热轧，Si：0.5％以上3.0％ 以下，Mn：3.5％以上且10.0％以下，P：0.1％以下，S：0.01％以下，N：0.008％以下，剩余部分含有Fe和不可避免的杂质，卷取热轧钢 在Ar1相变点到Ar1相变点+（Ar3相变点-Ar1相变点）/ 2的温度范围内，将盘卷钢板冷却至200℃以下，加热保持冷却后的钢板 在Ac1相变点-200℃到Ac1相变点的温度范围为30分钟以上的条件下，对加热后的钢板进行酸洗，在轧制压下率为20％以上的条件下冷轧酸洗钢板 ，并且对该冷轧钢板进行加热保持 Ac1变换点的范围为Ac1变换点+（Ac3变换点 - Ac1变换点）/ 2为30秒以上。
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29.发明申请公开(公告)号：US20130266821A1
公开(公告)日：2013-10-10
申请号：US13809953
申请日：2011-07-12
CPC分类号： C21D6/005 , B05D3/0218 , B05D3/12 , B32B15/013 , C21D6/008 , C21D9/46 , C21D2211/005 , C21D2211/008 , C22C1/02 , C22C38/00 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/40 , Y10T428/12965
摘要： A high-strength galvanized steel sheet with high yield ratio having excellent ductility and stretch flange formability, the steel sheet having a chemical composition containing, by mass %, C: 0.04% or more and 0.13% or less, Si: 0.9% or more and 2.3% or less, Mn: 0.8% or more and 2.4% or less, P: 0.1% or less, S: 0.01% or less, Al: 0.01% or more and 0.1% or less, N: 0.008% or less, and the balance being Fe and inevitable impurities and a microstructure including, in terms of area ratio, 94% or more of a ferrite phase and 2% or less of a martensite ferrite phase, wherein mean grain size of ferrite is 10 μm or less, Vickers hardness of ferrite is 140 or more, mean grain size of carbide particles existing at grain boundaries of ferrite is 0.5 μm or less, and aspect ratio of carbide particles existing at the grain boundaries of ferrite is 2.0 or less.
摘要翻译： 具有优异的延展性和拉伸凸缘成形性的高屈服比的高强度镀锌钢板，所述钢板的化学成分以质量％计含有C：0.04％以上且0.13％以下，Si：0.9％以上 2.3％以下，Mn：0.8％以上且2.4％以下，P：0.1％以下，S：0.01％以下，Al：0.01％以上且0.1％以下，N：0.008％以下 余量为Fe和不可避免的杂质，以及以面积比计，铁素体相为94％以上，马氏体铁素体相为2％以下的组织，其中铁素体的平均粒径为10μm以下 铁素体的维氏硬度为140以上，存在于铁素体晶界的碳化物粒子的平均粒径为0.5μm以下，存在于铁素体晶界的碳化物粒子的纵横比为2.0以下。
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30.发明授权公开(公告)号：US09340859B2
公开(公告)日：2016-05-17
申请号：US14119656
申请日：2012-06-01
申请人： Mai Miyata , Yoshitsugu Suzuki , Yoshiyasu Kawasaki , Tatsuya Nakagaito , Shinjiro Kaneko , Yasunobu Nagataki
发明人： Mai Miyata , Yoshitsugu Suzuki , Yoshiyasu Kawasaki , Tatsuya Nakagaito , Shinjiro Kaneko , Yasunobu Nagataki
IPC分类号： C21D1/76 , C22C38/02 , C23C2/06 , C23C2/02 , C21D9/46 , C22C38/06 , C22C38/58 , C23C2/40 , C21D1/74 , B32B15/01 , C22C38/00 , C22C38/04 , C22C38/24 , C22C38/34 , C22C38/38 , C23C2/28
CPC分类号： C23C2/02 , B32B15/013 , C21D1/74 , C21D1/76 , C21D9/46 , C21D2211/005 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/24 , C22C38/34 , C22C38/38 , C22C38/58 , C23C2/06 , C23C2/285 , C23C2/40
摘要： A method of manufacturing a high strength galvanized steel sheet has a first heating step including heating to 400° C. to 750° C. in an atmosphere containing O2: 0.1 to 20 percent and H2O: 1 to 50 percent and heating to 600° C. to 850° C. in an atmosphere containing O2: 0.01 to less than 0.1 percent and H2O: 1 to 20 percent is applied to a steel sheet, a second heating step includes holding the steel sheet in an atmosphere containing H2: 1 to 50 percent and having a dew point of 0° C. or lower at 750° C. to 900° C. for 15 to 600 s, cooling to a temperature of 450° C. to 550° C., and holding is performed at that temperature for 10 to 200 s, and a galvanization treatment is applied.
摘要翻译： 制造高强度镀锌钢板的方法具有第一加热步骤，包括在含有O 2的气氛中加热至400℃至750℃：0.1至20％，H 2 O：1至50％并加热至600℃ 在含有O 2：0.01〜小于0.1％，H 2 O：1〜20％的气氛中在850℃下进行加热，第2加热工序包括将钢板保持在含有H2的气氛中：1〜50 并且在750℃至900℃露点为0℃或更低的温度为15至600秒，冷却至450℃至550℃的温度，并在该温度下进行保持 温度为10〜200秒，进行镀锌处理。
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