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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。
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公开(公告)号：US20100112377A1
公开(公告)日：2010-05-06
申请号：US12594018
申请日：2008-03-27
申请人： Shinjiro Kaneko , Hiroshi Matsuda , Yoshiyasu Kawasaki , Tatsuya Nakagaito , Yoshitsugu Suzuki , Yusuke Fushiwaki , Takashi Kawano , Saiji Matsuoka
发明人： Shinjiro Kaneko , Hiroshi Matsuda , Yoshiyasu Kawasaki , Tatsuya Nakagaito , Yoshitsugu Suzuki , Yusuke Fushiwaki , Takashi Kawano , Saiji Matsuoka
IPC分类号： B32B15/01
CPC分类号： C23C2/06 , B32B15/013 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/28 , Y10T428/12799 , Y10T428/12951 , Y10T428/12972
摘要： A high-strength galvanized steel sheet is provided which has a tensile strength of a level of about 590 MPa and superior formability, including a coating with good appearance. The galvanized steel sheet includes a base steel and a galvanized coating layer formed over the surface of the base steel. The galvanized steel sheet has a chemical composition containing 0.005% to 0.12% of C, 0.7% to 2.7% of Si, 0.5% to 2.8% of Mn, 0.1% or less of P, 0.07% or less of S, 1.0% or less of Al, 0.008% or less of N, and the balance being Fe and inevitable impurities on a mass basis, and a microstructure constituted of at least 90% of ferrite and 2% to 10% of martensite on an area basis. The ferrite has a Vickers hardness of 120 or more on average, and an inclusion is precipitated from the grain boundary with a length of 50% or less relative to the entire length of the grain boundary in the surface layer of the base steel with a depth of 3 μm from the interface between the coating layer and the base steel.
摘要翻译： 提供了具有约590MPa的拉伸强度和优异的成形性的高强度镀锌钢板，包括具有良好外观的涂层。 镀锌钢板包括基体钢和形成在基体钢表面上的镀锌层。 镀锌钢板具有C：0.005〜0.12％，Si：0.7〜2.7％，Mn：0.5〜2.8％，P：0.1％以下，S：0.07％以下，1.0％以下 少量的Al，0.008％以下的N，余量为Fe和不可避免的杂质，基于面积的至少90％的铁素体和2〜10％的马氏体构成。 铁素体的维氏硬度平均为120以上，相对于基体钢的表层的晶界的全长为50％以下，从晶界析出的夹杂物的深度为深度 距涂层和基体钢之间的界面为3微米。
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公开(公告)号：US08076008B2
公开(公告)日：2011-12-13
申请号：US12594018
申请日：2008-03-27
申请人： Shinjiro Kaneko , Hiroshi Matsuda , Yoshiyasu Kawasaki , Tatsuya Nakagaito , Yoshitsugu Suzuki , Yusuke Fushiwaki , Takashi Kawano , Saiji Matsuoka
发明人： Shinjiro Kaneko , Hiroshi Matsuda , Yoshiyasu Kawasaki , Tatsuya Nakagaito , Yoshitsugu Suzuki , Yusuke Fushiwaki , Takashi Kawano , Saiji Matsuoka
CPC分类号： C23C2/06 , B32B15/013 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/28 , Y10T428/12799 , Y10T428/12951 , Y10T428/12972
摘要： A high-strength galvanized steel sheet is provided which has a tensile strength of a level of about 590 MPa and superior formability, including a coating with good appearance. The galvanized steel sheet includes a base steel and a galvanized coating layer formed over the surface of the base steel. The galvanized steel sheet has a chemical composition containing 0.005% to 0.12% of C, 0.7% to 2.7% of Si, 0.5% to 2.8% of Mn, 0.1% or less of P, 0.07% or less of S, 1.0% or less of Al, 0.008% or less of N, and the balance being Fe and inevitable impurities on a mass basis, and a microstructure constituted of at least 90% of ferrite and 2% to 10% of martensite on an area basis. The ferrite has a Vickers hardness of 120 or more on average, and an inclusion is precipitated from the grain boundary with a length of 50% or less relative to the entire length of the grain boundary in the surface layer of the base steel with a depth of 3 μm from the interface between the coating layer and the base steel.
摘要翻译： 提供了具有约590MPa的拉伸强度和优异的成形性的高强度镀锌钢板，包括具有良好外观的涂层。 镀锌钢板包括基体钢和形成在基体钢表面上的镀锌层。 镀锌钢板具有C：0.005〜0.12％，Si：0.7〜2.7％，Mn：0.5〜2.8％，P：0.1％以下，S：0.07％以下，1.0％以下 少量的Al，0.008％以下的N，余量为Fe和不可避免的杂质，基于面积的至少90％的铁素体和2〜10％的马氏体构成。 铁素体的维氏硬度平均为120以上，相对于基体钢的表层的晶界的全长为50％以下，从晶界析出的夹杂物的深度为深度 距涂层和基体钢之间的界面为3微米。
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4.发明授权公开(公告)号：US09011614B2
公开(公告)日：2015-04-21
申请号：US12866469
申请日：2009-01-28
IPC分类号： C22C38/00 , C22C38/08 , C22C38/18 , C23C2/02 , C22C38/02 , C21D1/25 , C21D6/00 , C21D8/04 , C22C38/04 , C22C38/06
CPC分类号： C22C38/02 , C21D1/25 , C21D6/005 , C21D6/008 , C21D8/0426 , C21D8/0436 , C21D8/0463 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C22C38/04 , C22C38/06 , Y10T428/12799
摘要： A high-strength galvanized steel sheet has excellent mechanical properties such as a TS of 1200 MPa or more, an El of 13% or more, and a hole expansion ratio of 50% or more and a method for manufacturing the same. A high-strength galvanized steel sheet excellent in formability contains 0.05% to 0.5% C, 0.01% to 2.5% Si, 0.5% to 3.5% Mn, 0.003% to 0.100% P, 0.02% or less S, and 0.010% to 0.5% Al on a mass basis, the remainder being Fe and unavoidable impurities, and has a microstructure which contains 0% to 10% ferrite, 0% to 10% martensite, and 60% to 95% tempered martensite on an area basis as determined by structure observation and which further contains 5% to 20% retained austenite as determined by X-ray diffractometry.
摘要翻译： 高强度镀锌钢板的TS为1200MPa以上，E1为13％以上，孔膨胀率为50％以上的机械特性及其制造方法。 成型性优异的高强度镀锌钢板包含0.05〜0.5％的C，0.01〜2.5％的Si，0.5〜3.5％的Mn，0.003〜0.100％的P，0.02％以下的S，0.010〜0.5 ％Al，其余为Fe和不可避免的杂质，并且具有包含0％至10％铁素体，0％至10％马氏体和60％至95％回火马氏体的微观结构，其面积基于由 结构观察，并且通过X射线衍射法确定还包含5％至20％的残余奥氏体。
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5.发明申请HIGH-STRENGTH COLD-ROLLED STEEL SHEET HAVING EXCELLENT FORMABILITY, HIGH-STRENGTH GALVANIZED STEEL SHEET, AND METHODS FOR MANUFACTURING THE SAME 审中-公开具有优异可锻性，高强度钢化钢板的高强度冷轧钢板及其制造方法公开(公告)号：US20110240176A1
公开(公告)日：2011-10-06
申请号：US13131758
申请日：2009-11-27
CPC分类号： C23C2/06 , C21D1/25 , C21D1/26 , C21D8/0463 , C21D8/0473 , C21D9/48 , C21D2211/005 , C21D2211/008 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/38 , C23C2/02 , C23C2/28
摘要： A high-strength cold-rolled steel sheet and high-strength galvanized steel sheet has a TS of 1180 MPa or more and excellent formability including stretch flangeability and bendability. The high-strength cold-rolled steel sheet contains 0.05% to 0.3% C, 0.5% to 2.5% Si, 1.5% 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 1.5% or less Cr (including 0%) on a mass basis, the remainder being Fe and unavoidable impurities.
摘要翻译： 高强度冷轧钢板和高强度镀锌钢板的TS为1180MPa以上，成型性优异，包括拉伸凸缘性和弯曲性。 高强度冷轧钢板含有0.05〜0.3％的Si，0.5〜2.5％的Si，1.5〜3.5％的Mn，0.001〜0.05％的P，0.0001〜0.01％的S，0.001〜0.1％ Al，0.0005％〜0.01％N，1.5％以下Cr（含0％），余量为Fe和不可避免的杂质。
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6.发明授权High-strength galvannealed steel sheet having excellent formability and fatigue resistance and method for manufacturing the same 有权优异的成形性和耐疲劳性的高强度合金化热镀锌钢板及其制造方法公开(公告)号：US08968494B2
公开(公告)日：2015-03-03
申请号：US13378501
申请日：2010-06-07
IPC分类号： C21D1/26 , C23C2/02 , C21D8/02 , C23C2/06 , C23C2/28 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06
CPC分类号： C23C2/02 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0273 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C23C2/06 , C23C2/28
摘要： The present invention provides a high-strength galvanized steel sheet having excellent ductility, stretch flangeability, and fatigue resistance, and a method for manufacturing the same. A high-strength galvannealed steel sheet having excellent formability and fatigue resistance is characterized in that the steel sheet is composed of steel having a composition containing, by % by mass, C: 0.05% to 0.3%, Si: 0.5% to 2.5%, Mn: 1.0% to 3.5%, P: 0.003% to 0.100%, S: 0.02% or less, Al: 0.010% to 0.1%, and the balance including iron and unavoidable impurities, and the steel sheet has a microstructure containing 50% or more of ferrite, 5% to 35% of martensite, and 2% to 15% of pearlite in terms of an area ratio, the martensite having an average gain size of 3 μm or less and an average distance of 5 μm or less between adjacent martensite grains.
摘要翻译： 本发明提供一种延展性，拉伸凸缘性，耐疲劳性优异的高强度镀锌钢板及其制造方法。 优异的成形性和耐疲劳性的高强度合金化热浸镀锌钢板的特征在于，钢板由以质量％计含有C：0.05〜0.3％，Si：0.5〜2.5％的组成的钢构成， Mn：1.0〜3.5％，P：0.003〜0.100％，S：0.02％以下，Al：0.010〜0.1％，余量包括铁和不可避免的杂质，钢板的组织含有50％ 以上的铁素体，5〜35％的马氏体和2〜15％的珠光体的面积比，马氏体的平均增益尺寸为3μm以下，平均距离为5μm以下， 相邻的马氏体颗粒。
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7.发明授权公开(公告)号：US08784578B2
公开(公告)日：2014-07-22
申请号：US13203096
申请日：2010-02-19
CPC分类号： C21D9/46 , C21D8/0205 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/18 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40 , Y10T428/31678
摘要： A high strength galvanized steel sheet with excellent workability, having a component composition containing C: 0.04% or more, and 0.15% or less, Si: 0.7% or more, and 2.3% or less, Mn: 0.8% or more, and 2.2% or less, P: 0.1% or less, S: 0.01% or less, Al: 0.1% or less, N: 0.008% or less, and the remainder composed of iron and incidental impurities on a percent by mass basis, and a microstructure including 70% or more of ferrite phase, 2% or more, and 10% or less of bainite phase, and 0% or more, and 12% or less of pearlite phase on an area fraction basis and 1% or more, and 8% or less of retained austenite phase on a volume fraction basis, wherein an average crystal grain diameter of ferrite is 18 μm or less and an average crystal grain diameter of retained austenite is 2 μm or less.
摘要翻译： 含有C：0.04％以上，0.15％以下，Si：0.7％以上，2.3％以下，Mn：0.8％以上，2.2％以下的成分组成的加工性优异的高强度镀锌钢板 ％以下，P：0.1％以下，S：0.01％以下，Al：0.1％以下，N：0.008％以下，剩余部分由铁和杂质构成，以质量计， 微观结构包括70％以上的铁素体相，2％以上，10％以下的贝氏体相，0％以上12％以下的珠光体相，1％以上，1％以上， 8％以下的残留奥氏体相，其中铁素体的平均晶粒直径为18μm以下，残留奥氏体的平均晶粒直径为2μm以下。
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公开(公告)号：US08241759B2
公开(公告)日：2012-08-14
申请号：US12532452
申请日：2008-03-18
CPC分类号： C23C2/02 , C21D9/46 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/06 , C23C2/28 , Y10T428/12799 , Y10T428/12972 , Y10T428/265
摘要： A high-strength galvanized steel sheet having excellent formability contains as a chemical component of steel on a mass percent basis: 0.05% to 0.3% of C; more than 0.60% to 2.0% of Si; 0.50% to 3.50% of Mn; 0.003% to 0.100% of P; 0.010% or less of S; 0.010% to 0.06% of Al; 0.007% or less of N; and the balance including Fe and inevitable impurities, and in the microstructure of the steel sheet, the standard deviation of nano-hardness is 1.50 GPa or less.
摘要翻译： 成形性优异的高强度镀锌钢板以质量％计含有钢的化学成分：C：0.05〜0.3％ 大于0.60％至2.0％的Si; 0.50％〜3.50％的Mn; 0.003％〜0.100％的P; 0.010％以下的S; 0.010〜0.06％的Al; 0.007％以下N; 余量包括Fe和不可避免的杂质，而在钢板的微结构中，纳米硬度的标准偏差为1.50GPa以下。
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9.发明申请公开(公告)号：US20110315279A1
公开(公告)日：2011-12-29
申请号：US13254528
申请日：2010-02-19
CPC分类号： C21D9/46 , B32B15/013 , C21D6/005 , C21D8/0205 , C21D9/48 , C21D2211/005 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/34 , C22C38/38 , C23C2/02 , C23C2/06 , C23C2/28
摘要： The high-strength galvanized steel sheet having excellent formability has a component composition containing, on the basis of mass percent, 0.05 to 0.2% C, 0.5 to 2.5% Si, 1.5 to 3.0% Mn, 0.001 to 0.05% P, 0.0001 to 0.01% S, 0.001 to 0.1% Al, and 0.0005 to 0.01% N, the balance being Fe and incidental impurities; and the steel sheet has a microstructure including a ferritic phase and a martensitic phase including a tempered-martensitic phase, the ferritic phase having an area fraction of 30% or more relative to an entirety of the microstructure, the martensitic phase having an area fraction of 30 to 50% relative to the entirety of the microstructure, and the tempered-martensitic phase having an area fraction of 70% or more relative to an entirety of the martensitic phase.
摘要翻译： 具有优异成形性的高强度镀锌钢板具有以质量％计含有0.05〜0.2％C，0.5〜2.5％Si，1.5〜3.0％Mn，0.001〜0.05％P，0.0001〜0.01 ％S，0.001〜0.1％Al，0.0005〜0.01％N，余量为Fe和附带杂质; 并且钢板具有包括铁素体相和包含回火 - 马氏体相的马氏体相的组织，所述铁素体相的相对于整个微观结构的面积分数为30％以上，所述马氏体相的面积分数为 相对于整个微观结构为30〜50％，相对于整个马氏体相的面积率为70％以上的回火 - 马氏体相。
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10.发明申请公开(公告)号：US20110139315A1
公开(公告)日：2011-06-16
申请号：US12864586
申请日：2009-01-19
CPC分类号： C21D8/0263 , C21D1/25 , C21D8/0436 , C21D8/0447 , C21D9/48 , C21D2211/001 , C21D2211/005 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/38 , C23C2/02 , Y10T428/12799
摘要： A high-strength galvanized steel sheet has a TS of at least 590 MPa and excellent ductility and stretch flangeability and a method for manufacturing the high-strength galvanized steel sheet. The galvanized steel sheet contains, on the basis of mass percent, C: 0.05% to 0.3%, Si: 0.01% to 2.5%, Mn: 0.5% to 3.5%, P: 0.003% to 0.100% or less, S: 0.02% or less, and Al: 0.010% to 1.5%. The total of Si and Al is 0.5% to 2.5%. The remainder are iron and incidental impurities, contain 20% or more of ferrite phase, 10% or less of martensite phase, and 10% to 60% of tempered martensite, on the basis of area percent, and 3% to 10% of retained austenite phase on the basis of volume fraction. The retained austenite has an average grain size of 2.0 μm or less.
摘要翻译： 高强度镀锌钢板的TS为至少590MPa，延展性和拉伸凸缘性优异，高强度镀锌钢板的制造方法。 镀锌钢板以质量％计含有C：0.05〜0.3％，Si：0.01〜2.5％，Mn：0.5〜3.5％，P：0.003〜0.100％以下，S：0.02 ％以下，Al：0.010〜1.5％。 Si和Al的总和为0.5％至2.5％。 其余为铁和偶然杂质，以面积百分比为基准，含有20％以上的铁素体相，10％以下的马氏体相，10％〜60％的回火马氏体，3％〜10％的保留 基于体积分数的奥氏体相。 残留奥氏体的平均粒径为2.0μm以下。
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