公开(公告)号：US08241759B2

公开(公告)日：2012-08-14

申请号：US12532452

申请日：2008-03-18

申请人： Tatsuya Nakagaito ,  Yoshitsugu Suzuki ,  Shusaku Takagi ,  Saiji Matsuoka ,  Takashi Kawano

发明人： Tatsuya Nakagaito ,  Yoshitsugu Suzuki ,  Shusaku Takagi ,  Saiji Matsuoka ,  Takashi Kawano

IPC分类号： B32B15/04 ,  B32B15/18

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。

公开(公告)号：US20100104891A1

公开(公告)日：2010-04-29

申请号：US12532452

申请日：2008-03-18

申请人： Tatsuya Nakagaito ,  Yoshitsugu Suzuki ,  Shusaku Takagi ,  Saiji Matsuoka ,  Takashi Kawano ,  Yoshiharu Sugimoto

发明人： Tatsuya Nakagaito ,  Yoshitsugu Suzuki ,  Shusaku Takagi ,  Saiji Matsuoka ,  Takashi Kawano ,  Yoshiharu Sugimoto

IPC分类号： B32B15/01 ,  C23C2/28

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。

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。

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

IPC分类号： B32B15/01 ,  B32B15/04 ,  B32B15/18 ,  B32B15/20

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。

公开(公告)号：US20100218857A1

公开(公告)日：2010-09-02

申请号：US12682801

申请日：2008-10-23

申请人： Tatsuya Nakagaito ,  Shusaku Takagi ,  Saiji Matsuoka ,  Shinjiro Kaneko

发明人： Tatsuya Nakagaito ,  Shusaku Takagi ,  Saiji Matsuoka ,  Shinjiro Kaneko

IPC分类号： C21D8/02 ,  B32B15/18 ,  B32B15/01 ,  C23C2/28

CPC分类号： C21D8/0263 ,  B32B15/013 ,  C21D1/26 ,  C21D8/04 ,  C21D8/0405 ,  C21D8/0426 ,  C21D8/0436 ,  C21D9/46 ,  C21D9/48 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C21D2211/009 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C23C2/06 ,  C23C30/00 ,  Y10T428/12799

摘要： A high tensile strength galvanized steel sheet with excellent formability and anti-crush properties contains, in terms of % by mass, 0.05 to 0.3% of C, 0.01 to 2.5% of Si, 0.5 to 3.5% of Mn, 0.003 to 0.100% of P, 0.02% or less of S, 0.010 to 1.5% of Al, 0.007% or less of N, in addition, 0.01 to 0.2% in total of at least one element selected from Ti, Nb, and V, the remainder being Fe and unavoidable impurities, the steel sheet having a microstructure composed of, in terms of area fraction, 20 to 87% of ferrite, 3 to 10% in total of martensite and residual austenite, and 10 to 60% of tempered martensite, and a second phase composed of the martensite, residual austenite, and tempered martensite having an average crystal grain diameter of 3 μm or less.

摘要翻译： 具有优异的成形性和抗粉碎性的高抗拉强度的镀锌钢板，按质量计含有C：0.05〜0.3％，Si：0.01〜2.5％，Mn：0.5〜3.5％，Mn：0.003〜0.100％ P的0.02％以下，Al：0.010〜1.5％，N：0.007％以下，另外，选自Ti，Nb，V中的至少一种以上的元素为0.01〜0.2％，余量为Fe 和不可避免的杂质，具有以面积分数表示的铁素体的20〜87％，马氏体和残余奥氏体的总计为3〜10％，回火马氏体为10〜60％的微结构的钢板， 平均结晶粒径为3μm以下的马氏体，残留奥氏体和回火马氏体组成的相。

公开(公告)号：US08430975B2

公开(公告)日：2013-04-30

申请号：US12864586

申请日：2009-01-19

申请人： Tatsuya Nakagaito ,  Saiji Matsuoka ,  Shinjiro Kaneko ,  Yoshiyasu Kawasaki ,  Yoshitsugu Suzuki

发明人： Tatsuya Nakagaito ,  Saiji Matsuoka ,  Shinjiro Kaneko ,  Yoshiyasu Kawasaki ,  Yoshitsugu Suzuki

IPC分类号： C22C38/02 ,  C22C38/06 ,  B32B15/18

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％。 剩余部分为铁和杂质，基于面积百分比含有20％以上的铁素体相，10％以下的马氏体相和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。

公开(公告)号：US09011614B2

公开(公告)日：2015-04-21

申请号：US12866469

申请日：2009-01-28

申请人： Tatsuya Nakagaito ,  Saiji Matsuoka ,  Yoshitsugu Suzuki ,  Yuki Toji

发明人： Tatsuya Nakagaito ,  Saiji Matsuoka ,  Yoshitsugu Suzuki ,  Yuki Toji

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。

公开(公告)号：US08968494B2

公开(公告)日：2015-03-03

申请号：US13378501

申请日：2010-06-07

申请人： Tatsuya Nakagaito ,  Yoshiyasu Kawasaki ,  Shinjiro Kaneko ,  Saiji Matsuoka ,  Yoshitsugu Suzuki

发明人： Tatsuya Nakagaito ,  Yoshiyasu Kawasaki ,  Shinjiro Kaneko ,  Saiji Matsuoka ,  Yoshitsugu Suzuki

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。

公开(公告)号：US20110139315A1

公开(公告)日：2011-06-16

申请号：US12864586

申请日：2009-01-19

申请人： Tatsuya Nakagaito ,  Saiji Matsuoka ,  Shinjiro Kaneko ,  Yoshiyasu Kawasaki ,  Yoshitsugu Suzuki

发明人： Tatsuya Nakagaito ,  Saiji Matsuoka ,  Shinjiro Kaneko ,  Yoshiyasu Kawasaki ,  Yoshitsugu Suzuki

IPC分类号： C23C2/02 ,  C22C38/00 ,  C22C38/18 ,  C22C38/16 ,  C22C38/08

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。

公开(公告)号：US20120118438A1

公开(公告)日：2012-05-17

申请号：US13378501

申请日：2010-06-07

申请人： Tatsuya Nakagaito ,  Yoshiyasu Kawasaki ,  Shinjiro Kaneko ,  Saiji Matsuoka ,  Yoshitsugu Suzuki

发明人： Tatsuya Nakagaito ,  Yoshiyasu Kawasaki ,  Shinjiro Kaneko ,  Saiji Matsuoka ,  Yoshitsugu Suzuki

IPC分类号： C23C2/02 ,  C21D1/26 ,  B32B15/00 ,  C21D6/00

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。