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1.发明申请公开(公告)号：US20110017360A1
公开(公告)日：2011-01-27
申请号：US12934039
申请日：2008-11-12
CPC分类号： C22C38/14 , C21D8/0426 , C21D8/0463 , C21D9/46 , C21D9/48 , C21D2211/004 , C21D2211/005 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/02 , C23C2/28
摘要： This hot-rolled steel sheet contains, in terms of mass%, C: 0.015% or more to less than 0.040%; Si: less than 0.05%; Mn: 0.9% or more to 1.8% or less; P: less than 0.02%; S: less than 0.01%; Al: less than 0.1%; N: less than 0.006%; and Ti: 0.05% or more to less than 0.11%, with the remainder being Fe and inevitable impurities, wherein Ti/C is in a range of 2.5 or more to less than 3.5, Nb, Zr, V, Cr, Mo, B and W are not included, a microstructure includes a mixed microstructure of polygonal ferrite and quasi-polygonal ferrite in a proportion of greater than 96%, a maximum tensile strength is 520 MPa or more and less than 720 MPa, an aging index AI is more than 15 MPa, a product of a hole expansion ratio (A) % and a total elongation (El) % is 2350 or more, and a fatigue limit is 200 MPa or more.
摘要翻译： 该热轧钢板以质量％计含有C：0.015％以上且小于0.040％ Si：小于0.05％; Mn：0.9％以上至1.8％以下; P：小于0.02％; S：小于0.01％; Al：小于0.1％; N：小于0.006％; 和Ti：0.05％以上至小于0.11％，其余为Fe和不可避免的杂质，其中Ti / C在2.5以上且小于3.5的范围内，Nb，Zr，V，Cr，Mo，B 并不包括W，微结构包括多数铁素体和准多边形铁素体的混合微结构，其比例大于96％，最大拉伸强度为520MPa以上且低于720MPa，老化指数AI更多 孔膨胀率（A）％和总伸长率（E1）％的乘积为15MPa以上，疲劳极限为200MPa以上。
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2.发明申请公开(公告)号：US20110008647A1
公开(公告)日：2011-01-13
申请号：US12736154
申请日：2009-03-26
CPC分类号： C22C38/32 , C21D8/0226 , C21D8/04 , C21D8/0426 , C21D8/0436 , C21D8/0473 , C21D9/46 , C21D2211/005 , C21D2211/008 , C22C38/002 , C22C38/02 , C22C38/28 , C22C38/38 , C23C2/02 , C23C2/04 , C23C2/26 , C23C2/28 , Y10T428/12799
摘要： This cold-rolled steel sheet includes, in terms of mass %, C: not less than 0.05% and not more than 0.095%, Cr: not less than 0.15% and not more than 2.0%, B: not less than 0.0003% and not more than 0.01%, Si: not less than 0.3% and not more than 2.0%, Mn: not less than 1.7% and not more than 2.6%, Ti: not less than 0.005% and not more than 0.14%, P: not more than 0.03%, S: not more than 0.01%, Al: not more than 0.1%, N: less than 0.005%, O: not less than 0.0005% and not more than 0.005%, and contains as the remainder, iron and unavoidable impurities, wherein the microstructure of the steel sheet includes mainly polygonal ferrite having a crystal grain size of not more than 4 μm, and hard microstructures of bainite and martensite, the block size of the martensite is not more than 0.9 μm, the Cr content within the martensite is 1.1 to 1.5 times the Cr content within the polygonal ferrite, and the tensile strength is at least 880 MPa.
摘要翻译： 该冷轧钢板以质量％计含有C：0.05％以上0.095％以下的Cr：0.15％以上2.0％以下，B：0.0003％以上， 0.01％以下，Si：0.3％以上2.0％以下，Mn：1.7％以上2.6％以下，Ti：0.005％以上0.14％以下，P： 不大于0.03％，S：不大于0.01％，Al：不大于0.1％，N：小于0.005％，O：不小于0.0005％，不大于0.005％，其余为铁 和不可避免的杂质，其中钢板的组织主要包括晶粒尺寸不大于4μm的多边形铁素体，贝氏体和马氏体的硬质组织，马氏体的块尺寸不大于0.9μm，Cr 马氏体内的含量为多边形铁素体中的Cr含量的1.1〜1.5倍，拉伸强度为880MPa以上。
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3.发明授权公开(公告)号：US08657970B2
公开(公告)日：2014-02-25
申请号：US12934039
申请日：2008-11-12
CPC分类号： C22C38/14 , C21D8/0426 , C21D8/0463 , C21D9/46 , C21D9/48 , C21D2211/004 , C21D2211/005 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/02 , C23C2/28
摘要： This hot-rolled steel sheet contains, in terms of mass %, C: 0.015% or more to less than 0.040%; Si: less than 0.05%; Mn: 0.9% or more to 1.8% or less; P: less than 0.02%; S: less than 0.01%; Al: less than 0.1%; N: less than 0.006%; and Ti: 0.05% or more to less than 0.11%, with the remainder being Fe and inevitable impurities, wherein Ti/C is in a range of 2.5 or more to less than 3.5, Nb, Zr, V, Cr, Mo, B and W are not included, a microstructure includes a mixed microstructure of polygonal ferrite and quasi-polygonal ferrite in a proportion of greater than 96%, a maximum tensile strength is 520 MPa or more and less than 720 MPa, an aging index AI is more than 15 MPa, a product of a hole expansion ratio (λ) % and a total elongation (El) % is 2350 or more, and a fatigue limit is 200 MPa or more.
摘要翻译： 该热轧钢板以质量％计含有C：0.015％以上且小于0.040％ Si：小于0.05％; Mn：0.9％以上至1.8％以下; P：小于0.02％; S：小于0.01％; Al：小于0.1％; N：小于0.006％; 和Ti：0.05％以上至小于0.11％，其余为Fe和不可避免的杂质，其中Ti / C在2.5以上且小于3.5的范围内，Nb，Zr，V，Cr，Mo，B 并不包括W，微结构包括多数铁素体和准多边形铁素体的混合微结构，其比例大于96％，最大拉伸强度为520MPa以上且低于720MPa，老化指数AI更多 超过15MPa时，孔膨胀率（λ）％和总伸长率（E1）％的乘积为2350以上，疲劳极限为200MPa以上。
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4.发明授权公开(公告)号：US08163108B2
公开(公告)日：2012-04-24
申请号：US12736154
申请日：2009-03-26
CPC分类号： C22C38/32 , C21D8/0226 , C21D8/04 , C21D8/0426 , C21D8/0436 , C21D8/0473 , C21D9/46 , C21D2211/005 , C21D2211/008 , C22C38/002 , C22C38/02 , C22C38/28 , C22C38/38 , C23C2/02 , C23C2/04 , C23C2/26 , C23C2/28 , Y10T428/12799
摘要： This cold-rolled steel sheet includes, in terms of mass %, C: not less than 0.05% and not more than 0.095%, Cr: not less than 0.15% and not more than 2.0%, B: not less than 0.0003% and not more than 0.01%, Si: not less than 0.3% and not more than 2.0%, Mn: not less than 1.7% and not more than 2.6%, Ti: not less than 0.005% and not more than 0.14%, P: not more than 0.03%, S: not more than 0.01%, Al: not more than 0.1%, N: less than 0.005%, O: not less than 0.0005% and not more than 0.005%, and contains as the remainder, iron and unavoidable impurities, wherein the microstructure of the steel sheet includes mainly polygonal ferrite having a crystal grain size of not more than 4 μm, and hard microstructures of bainite and martensite, the block size of the martensite is not more than 0.9 μm, the Cr content within the martensite is 1.1 to 1.5 times the Cr content within the polygonal ferrite, and the tensile strength is at least 880 MPa.
摘要翻译： 该冷轧钢板以质量％计含有C：0.05％以上0.095％以下的Cr：0.15％以上2.0％以下，B：0.0003％以上， 0.01％以下，Si：0.3％以上2.0％以下，Mn：1.7％以上2.6％以下，Ti：0.005％以上0.14％以下，P： 不大于0.03％，S：不大于0.01％，Al：不大于0.1％，N：小于0.005％，O：不小于0.0005％，不大于0.005％，其余为铁 和不可避免的杂质，其中钢板的组织主要包括晶粒尺寸不大于4μm的多边形铁素体，贝氏体和马氏体的硬质组织，马氏体的块尺寸不大于0.9μm，Cr 马氏体内的含量为多边形铁素体中的Cr含量的1.1〜1.5倍，拉伸强度为880MPa以上。
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5.发明申请公开(公告)号：US20140178712A1
公开(公告)日：2014-06-26
申请号：US14236371
申请日：2012-08-08
IPC分类号： C22C38/50 , C22C38/48 , C22C38/42 , C22C38/16 , C22C38/00 , C22C38/12 , C22C38/06 , C22C38/04 , C22C38/02 , C21D8/02 , C22C38/14
CPC分类号： C22C38/50 , C21D8/0263 , C21D8/0426 , C21D8/0473 , C21D8/0484 , C21D9/56 , C21D2211/002 , C21D2211/005 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/42 , C22C38/48 , C23C2/02 , Y10T428/12972
摘要： Hot rolled steel sheet which has a maximum tensile strength of 600 MPa or more and has an excellent low temperature impact energy absorption and HAZ softening resistance and a method of production of the same are provided, that is, sheet which contains, by mass %, C: 0.04 to 0.09%, Si: 0.4% or less, Mn: 1.2 to 2.0%, P: 0.1% or less, S: 0.02% or less, Al: 1.0% or less, Nb: 0.02 to 0.09%, Ti: 0.02 to 0.07%, and N: 0.005% or less, where 2.0≦Mn+8[% Ti]+12[% Nb]≦2.6, has a balance of Fe and unavoidable impurities, has an area percentage of pearlite of 5% or less, has a total area percentage of martensite and retained austenite of 0.5% or less, has a balance of a metal structure of ferrite and/or bainite, has an average grain size of ferrite and bainite of 10 μm or less, has an average particle size of alloy carbonitrides with incoherent interfaces which contain Ti and Nb of 20 nm or less, and has a yield ratio of 0.85 or more.
摘要翻译： 具有最大抗张强度为600MPa以上且具有优异的低温冲击能量吸收和HAZ耐软化性的热轧钢板及其制造方法，即以质量％计， C：0.04〜0.09％，Si：0.4％以下，Mn：1.2〜2.0％，P：0.1％以下，S：0.02％以下，Al：1.0％以下，Nb：0.02〜0.09％，Ti ：0.02〜0.07％，N：0.005％以下，其中2.0＆nlE; Mn + 8 [％Ti] +12 [％Nb]＆nlE; 2.6，其余为Fe和不可避免的杂质，具有珠光体的面积百分比 为5％以下，具有0.5％以下的马氏体和残留奥氏体的总面积百分比，铁素体和/或贝氏体的金属结构的平衡，铁素体和贝氏体的平均粒径为10μm以下 具有包含Ti和Nb为20nm以下的非相干界面的合金碳氮化物的平均粒径，并且屈服比为0.85以上。
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6.发明申请HIGH STRENGTH STEEL PLATE WITH ULTIMATE TENSILE STRENGTH OF 900 MPa OR MORE EXCELLENT IN HYDROGEN EMBRITTLEMENT RESISTANCE AND METHOD OF PRODUCTION OF SAME 有权具有900MPa以上或更优异的氢腐蚀电阻的最终拉伸强度的高强度钢板及其制造方法公开(公告)号：US20120222781A1
公开(公告)日：2012-09-06
申请号：US13508779
申请日：2010-11-30
申请人： Masafumi Azuma , Noriyuki Suzuki , Naoki Maruyama , Akinobu Murasato , Yasuharu Sakuma , Hiroyuki Kawata , Chisato Wakabayashi
发明人： Masafumi Azuma , Noriyuki Suzuki , Naoki Maruyama , Akinobu Murasato , Yasuharu Sakuma , Hiroyuki Kawata , Chisato Wakabayashi
IPC分类号： C21D8/00 , C22C38/04 , C22C38/02 , C22C38/16 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/00 , C22C38/06
CPC分类号： C23C2/06 , C21D9/46 , C21D2211/002 , C21D2211/004 , C21D2211/005 , C21D2211/008 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/28 , C23C2/40 , C25D5/36
摘要： High strength steel plate with an ultimate tensile strength of 900 MPa or more which is excellent in hydrogen embrittlement resistance characterized in that, in the structure of the steel plate, (a) by volume fraction, ferrite is present in 10 to 50%, bainitic ferrite and/or bainite in 10 to 60%, and tempered martensite in 10 to 50%, and (b) iron-based carbides which contain Si or Si and Al in 0.1% or more are present in 4×108 (particles/mm3) or more.
摘要翻译： 具有900MPa以上的极限拉伸强度的高强度钢板，其耐氢脆性优异，其特征在于，在钢板的结构中，（a）以体积分数计，铁素体的含量为10〜50％，贝氏体 铁素体和/或贝氏体为10〜60％，回火马氏体为10〜50％，（b）含有Si或Si和Al为0.1％以上的铁基碳化物存在于4×10 8（粒子/ mm 3 ） 或者更多。
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公开(公告)号：US10023947B2
公开(公告)日：2018-07-17
申请号：US13508779
申请日：2010-11-30
申请人： Masafumi Azuma , Noriyuki Suzuki , Naoki Maruyama , Akinobu Murasato , Yasuharu Sakuma , Hiroyuki Kawata , Chisato Wakabayashi
发明人： Masafumi Azuma , Noriyuki Suzuki , Naoki Maruyama , Akinobu Murasato , Yasuharu Sakuma , Hiroyuki Kawata , Chisato Wakabayashi
IPC分类号： C21D8/00 , C22C38/04 , C22C38/02 , C23C2/06 , C21D9/46 , C22C38/00 , C22C38/06 , C23C2/28 , C25D5/36 , C23C2/40
摘要： High strength steel plate with an ultimate tensile strength of 900 MPa or more which is excellent in hydrogen embrittlement resistance characterized in that, in the structure of the steel plate, (a) by volume fraction, ferrite is present in 10 to 50%, bainitic ferrite and/or bainite in 10 to 60%, and tempered martensite in 10 to 50%, and (b) iron-based carbides which contain Si or Si and Al in 0.1% or more are present in 4×108 (particles/mm3) or more.
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8.发明授权High-strength steel sheet and galvanized steel sheet having very good balance between hole expansibility and ductility, and also excellent in fatigue resistance, and methods of producing the steel sheets 有权孔膨胀性和延展性之间具有非常好的平衡的高强度钢板和镀锌钢板，并且耐疲劳性优异，以及钢板的制造方法公开(公告)号：US08460481B2
公开(公告)日：2013-06-11
申请号：US12736417
申请日：2009-04-09
CPC分类号： C23C2/28 , C21D8/0236 , C21D8/0273 , C21D9/46 , C21D9/48 , C21D2201/05 , C21D2211/004 , C21D2211/005 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C23C2/02 , C23C2/06
摘要： The invention is directed to providing, for application in automobiles, construction materials, household appliances and the like, high-strength sheets excellent in formability properties such as hole expansibility and ductility, and also in fatigue resistance, characterized in comprising, in specified contents expressed in mass %, C, Si, Mn, P, S, Al, N and O and a balance of iron and unavoidable impurities, and having a steel sheet structure composed mainly of ferrite and hard structures, a crystal orientation difference between some ferrite adjacent to hard structures and the hard structures of less than 9°, and a maximum tensile strength of 540 MPa or greater.
摘要翻译： 本发明旨在提供在汽车，建筑材料，家用电器等中的应用，具有优异的成型性能如扩孔性和延展性以及耐疲劳性的高强度片材，其特征在于，在特定内容中表达 以质量％计，C，Si，Mn，P，S，Al，N和O以及铁和不可避免的杂质的平衡，并且具有主要由铁素体和硬质结构组成的钢板结构，一些铁素体相邻的晶体取向差异 硬结构和硬结构小于9°，最大拉伸强度为540MPa或更大。
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公开(公告)号：US08070889B2
公开(公告)日：2011-12-06
申请号：US12736417
申请日：2009-04-09
摘要： The invention is directed to providing, for application in automobiles, construction materials, household appliances and the like, high-strength sheets excellent in formability properties such as hole expansibility and ductility, and also in fatigue resistance, characterized in comprising, in specified contents expressed in mass %, C, Si, Mn, P, S, Al, N and O and a balance of iron and unavoidable impurities, and having a steel sheet structure composed mainly of ferrite and hard structures, a crystal orientation difference between some ferrite adjacent to hard structures and the hard structures of less than 9°, and a maximum tensile strength of 540 MPa or greater.
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10.发明申请公开(公告)号：US20110024004A1
公开(公告)日：2011-02-03
申请号：US12736417
申请日：2009-04-09
CPC分类号： C23C2/28 , C21D8/0236 , C21D8/0273 , C21D9/46 , C21D9/48 , C21D2201/05 , C21D2211/004 , C21D2211/005 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C23C2/02 , C23C2/06
摘要： The invention is directed to providing, for application in automobiles, construction materials, household appliances and the like, high-strength sheets excellent in formability properties such as hole expansibility and ductility, and also in fatigue resistance, characterized in comprising, in specified contents expressed in mass %, C, Si, Mn, P, S, Al, N and O and a balance of iron and unavoidable impurities, and having a steel sheet structure composed mainly of ferrite and hard structures, a crystal orientation difference between some ferrite adjacent to hard structures and the hard structures of less than 9°, and a maximum tensile strength of 540 MPa or greater.
摘要翻译： 本发明旨在提供在汽车，建筑材料，家用电器等中的应用，具有优异的成型性能如扩孔性和延展性以及耐疲劳性的高强度片材，其特征在于，在特定内容中表达 以质量％计，C，Si，Mn，P，S，Al，N和O以及铁和不可避免的杂质的平衡，并且具有主要由铁素体和硬质结构组成的钢板结构，一些铁素体相邻的晶体取向差异 硬结构和硬结构小于9°，最大拉伸强度为540MPa或更大。
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