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1. 发明授权

US07833363B2 Method for producing high-strength forged parts having high reduction of area 有权
标题翻译：制造面积大减少的高强度锻造件的制造方法
公开(公告)号：US07833363B2
公开(公告)日：2010-11-16
申请号：US11874516
申请日：2007-10-18
申请人： Shushi Ikeda , Koichi Makii , Hiroshi Akamizu , Yoichi Mukai , Koh-ichi Sugimoto
发明人： Shushi Ikeda , Koichi Makii , Hiroshi Akamizu , Yoichi Mukai , Koh-ichi Sugimoto
IPC分类号： C21D8/00
CPC分类号： C22C38/02 , C21D7/13 , C21D8/005 , C21D2211/001 , C21D2211/002 , C21D2211/008 , C22C38/04 , C22C38/06
摘要： A high-strength forged part is disclosed which comprises a base phase structure, comprising 30% or more of ferrite in terms of a space factor, and a second phase structure, comprising bainite and/or martensite, and retained austenite having an average gain diameter of 5 μm or less and a content represented by 50X[C]
摘要翻译：公开了一种高强度锻造部件，其包括基本相结构，其包含基于空间因子的铁素体的30％以上，以及包含贝氏体和/或马氏体的第二相结构和具有平均增益直径的残余奥氏体为50×[C] <[VγR] <150×[C]表示的含量，[VγR]表示残留奥氏体的空间因子（γR），[C]表示C的质量％锻造部分。此外，公开了一种高强度锻造部件，其包括基本相结构，其包含基于空间因子的回火贝氏体或回火马氏体的50％以上，以及包含马氏体和3％至30％保留的第二相结构奥氏体以空间因子计，其中纵横比为2以下的残留奥氏体和马氏体的部分在空间因子方面为25％以下。

2. 发明授权

US07767036B2 High strength cold rolled steel sheet and plated steel sheet excellent in the balance of strength and workability 有权
标题翻译：高强度冷轧钢板和电镀钢板，其强度和加工性的平衡优异
公开(公告)号：US07767036B2
公开(公告)日：2010-08-03
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： C22C38/02 , C22C38/04 , C22C38/06 , B32B15/01
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）面的X射线衍射峰的半值宽度为0.220度以下。

3. 发明申请

US20100172786A1 HIGH-STRENGTH STEEL SHEET HAVING EXCELLENT ELONGATION, STRETCH FLANGEABILITY AND WELDABILITY 有权
标题翻译：具有优异延伸性，拉伸密封性和焊接性的高强度钢板
公开(公告)号：US20100172786A1
公开(公告)日：2010-07-08
申请号：US12303634
申请日：2007-06-04
申请人： Michiharu Nakaya , Yoichi Mukai , Koichi Sugimoto
发明人： Michiharu Nakaya , Yoichi Mukai , Koichi Sugimoto
IPC分类号： C22C38/04 , C22C38/06 , C22C38/22
CPC分类号： C22C38/02 , C21D9/46 , C22C38/04
摘要： The present invention provides a high-strength steel sheet which has a 980 MPa class tensile strength as well as has excellent elongation, stretch flangeability and weldability, and also has excellent anti-delayed fraction property. The high-strength steel sheet comprises steel satisfying: C: 0.12 to 0.25%, Si: 1.0 to 3.0%, Mn: 1.5 to 3.0%, P: 0.15% or less, S: 0.02% or less, Al: 0.4% or less, and comprising the remnant made from iron and unavoidable impurities, wherein a ratio of the contents of Si and C (Si/C) is within the range from 7 to 14 in terms of a mass ratio, and a microstructure in a longitudinal section comprises, by an occupancy ratio based on the entire structure, 1) bainitic ferrite: 50% or more, 2) lath-type residual austenite: 3% or more, and 3) block-type residual austenite: 1% or more to ½×occupancy ratio of lath-type residual austenite, and 4) average size of block-type second phase is 10 μm or less.
摘要翻译：本发明提供一种具有980MPa级抗拉强度以及优异的伸长率，拉伸凸缘性和焊接性的高强度钢板，并且还具有优异的抗延迟分级性能。高强度钢板包括：C：0.12〜0.25％，Si：1.0〜3.0％，Mn：1.5〜3.0％，P：0.15％以下，S：0.02％以下，Al：0.4％并且包含由铁和不可避免的杂质制成的残余物，其中Si和C（Si / C）的含量比以质量比计在7至14的范围内，并且纵向截面中的微观结构包括基于整体结构的占空比，1）贝氏体铁素体：50％以上，2）板条残余奥氏体：3％以上，3）块状残余奥氏体：1％以上〜1 / ×板条残留奥氏体的占有率，4）块状第二相的平均尺寸为10μm以下。

4. 发明授权

US07591977B2 High strength and low yield ratio cold rolled steel sheet and method of manufacturing the same 有权
标题翻译：高强度低屈服比的冷轧钢板及其制造方法
公开(公告)号：US07591977B2
公开(公告)日：2009-09-22
申请号：US11044185
申请日：2005-01-28
申请人： Shushi Ikeda , Hiroshi Akamizu , Koichi Makii , Yoichi Mukai , Koichi Sugimoto
发明人： Shushi Ikeda , Hiroshi Akamizu , Koichi Makii , Yoichi Mukai , Koichi Sugimoto
IPC分类号： C22C38/02 , C22C38/04 , C22C38/06
CPC分类号： C21D9/52 , C21D1/20 , C21D8/0273 , C21D2211/001 , C21D2211/002
摘要： To provide a high strength and low yield ratio cold rolled steel sheet having high elongation property and high flange drawing property, or a plated steel sheet made by plating the same. The high strength and low yield ratio cold rolled steel sheet or the plated steel sheet made by plating the same has such a constitution as 0.10 to 0.25% of C, 1.0 to 2.0% of Si and 1.5 to 3.0% of Mn, are contained in terms of weight percentage, while other elements are controlled such as Al within 0.2%, P within 0.15% and S within 0.02%, with residual austenite occupying at least 5%, bainitic ferrite occupying at least 60% (preferably 80% or more), and polygonal ferrite within 20% (containing 0%), so that a tensile strength is 980 MPa or higher, while an elongation (El in %), a flange drawing property (λin %), a tensile strength (TS in MPa) and a yield strength (YP in MPa) satisfy the following inequality (1): [(El ×λ×TS)/YP]≧645.
摘要翻译：为了提供具有高伸长率和高法兰拉拔性能的高强度和低屈服比的冷轧钢板，或通过电镀其制成的镀覆钢板。高强度低屈服比的冷轧钢板或通过电镀钢板制成的镀覆钢板具有C：0.10〜0.25％，Si：1.0〜2.0％，Mn：1.5〜3.0％贝氏体铁素体占据至少60％（优选为80％以上）的贝氏体铁素体，而其他元素则控制在Al的0.2％以内，P在0.15％以内，S在0.02％以内，残留奥氏体占5％，多边形铁素体为20％以下（含有0％），拉伸强度为980MPa以上，伸长率（El％），凸缘拉伸性能（兰德因数％），拉伸强度（MPa）屈服强度（YP，MPa）满足以下不等式（1）：[（El×lambdaxTS）/ YP]> = 645。

5. 发明申请

US20090053096A1 HIGH-STRENGTH COLD-ROLLED STEEL SHEET EXCELLENT IN COATING ADHESION, WORKABILITY AND HYDROGEN EMBRITTLEMENT RESISTANCE, AND STEEL COMPONENT FOR AUTOMOBILE 有权
标题翻译：高强度冷轧钢板优良的涂装粘合力，可加工性和耐腐蚀性，以及汽车用钢构件
公开(公告)号：US20090053096A1
公开(公告)日：2009-02-26
申请号：US11908616
申请日：2006-03-23
申请人： Masaaki Miura , Shinji Kozuma , Yoichi Mukai , Yoshinobu Omiya
发明人： Masaaki Miura , Shinji Kozuma , Yoichi Mukai , Yoshinobu Omiya
IPC分类号： C22C38/02 , C22C38/06
CPC分类号： C22C38/02 , C21D8/0468 , C21D9/46 , C21D9/48 , C21D2211/004 , C21D2211/005 , C21D2211/008 , C22C38/04 , C22C38/06
摘要： A cold rolled steel sheet satisfying on the basis of percent by mass the chemical composition of 0.06-0.6% C, 0.1-2% Si, 0.01-3% Al, 1-4% Si+Al, 1-6% Mn, Si/Mn≦0.40, in which there exists 10 or more pieces/100 μm2 of Mn—Si composite oxide having Mn—Si atom ratio (Mn/Si) of 0.5 or over and major axis of from 0.01 μm to 5 μm and also having a covering ratio of 10% or below at which the surface of the steel sheet is covered with oxide containing Si as the main component.
摘要翻译：冷轧钢板以化学组成为0.06-0.6％C，0.1-2％Si，0.01-3％Al，1-4％Si + Al，1-6％Mn，Si 其中存在Mn-Si原子比（Mn / Si）为0.5以上且长轴为0.01μm〜5μm的Mn-Si复合氧化物的10个以上/100μm2以上的/Mn<=0.40 覆盖率为10％以下的钢板的表面覆盖有以Si为主要成分的氧化物。

6. 发明申请

US20080251160A1 High-Strength Cold-Rolled Steel Sheet Excellent in Uniform Elongation and Method for Manufacturing Same 有权
标题翻译：高强度冷轧钢板均匀伸长率优良，制造方法相同
公开(公告)号：US20080251160A1
公开(公告)日：2008-10-16
申请号：US11910029
申请日：2006-03-28
申请人： Hiroshi Akamizu , Yoichi Mukai , Shushi Ikeda , Koichi Sugimoto
发明人： Hiroshi Akamizu , Yoichi Mukai , Shushi Ikeda , Koichi Sugimoto
IPC分类号： C22C38/04
CPC分类号： C22C38/04 , C21D8/0236 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C22C38/02
摘要： A high-strength cold-rolled steel sheet excellent in uniform elongation, including in percent by mass: 0.10-0.28% of C; 1.0-2.0% of Si; and 1.0-3.0% of Mn, and the structures of the same having the space factors below to the entire structure: 30-65% of bainitic ferrite; 30-50% of polygonal ferrite; and 5-20% of residual austenite.
摘要翻译：均匀伸长率优异的高强度冷轧钢板，以质量％计：0.10〜0.28％ 1.0-2.0％的Si; 和1.0-3.0％的Mn，并且具有以下空间因子的结构相对于整个结构：贝氏体铁素体的30-65％ 30-50％的多边形铁素体; 和5-20％的残留奥氏体。

7. 发明申请

US20080092996A1 HIGH-STRENGTH FORGED PARTS HAVING HIGH REDUCTION OF AREA AND METHOD FOR PRODUCING SAME 有权
标题翻译：具有高度减少面积的高强度锻造件及其生产方法
公开(公告)号：US20080092996A1
公开(公告)日：2008-04-24
申请号：US11874516
申请日：2007-10-18
申请人： Shushi Ikeda , Koichi Makii , Hiroshi Akamizu , Yoichi Mukai , Koh-ichi Sugimoto
发明人： Shushi Ikeda , Koichi Makii , Hiroshi Akamizu , Yoichi Mukai , Koh-ichi Sugimoto
IPC分类号： C21D8/00 , C22C38/00
CPC分类号： C22C38/02 , C21D7/13 , C21D8/005 , C21D2211/001 , C21D2211/002 , C21D2211/008 , C22C38/04 , C22C38/06
摘要： A high-strength forged part is disclosed which comprises a base phase structure, comprising 30% or more of ferrite in terms of a space factor, and a second phase structure, comprising bainite and/or martensite, and retained austenite having an average grain diameter of 5 μm or less and a content represented by 50X[C]
摘要翻译：公开了一种高强度锻造部件，其包括基本相结构，其包含基于空间因子的铁素体的30％以上，以及包含贝氏体和/或马氏体的第二相结构，以及具有平均粒径的残留奥氏体为5μm以下，由50X [C] <[VγR<150×[C]表示的含量表示为残留奥氏体（γR）和[C]表示锻造部分中C的质量％。此外，公开了一种高强度锻造部件，其包括基本相结构，其包含基于空间因子的回火贝氏体或回火马氏体的50％以上，以及包含马氏体和3％至30％保留的第二相结构奥氏体以空间因子计，其中纵横比为2以下的残留奥氏体和马氏体的部分在空间因子方面为25％以下。

8. 发明申请

US20050167007A1 High-strength cold-rolled steel sheet having outstanding elongation and superior stretch flange formability and method for production thereof 有权
标题翻译：伸长率优异，拉伸凸缘成型性优异的高强度冷轧钢板及其制造方法
公开(公告)号：US20050167007A1
公开(公告)日：2005-08-04
申请号：US11045309
申请日：2005-01-31
申请人： Masaaki Miura , Yoichi Mukai , Yoshinobu Omiya , Shinji Kozuma
发明人： Masaaki Miura , Yoichi Mukai , Yoshinobu Omiya , Shinji Kozuma
IPC分类号： C21D9/46 , C22C38/00 , C22C38/18 , C22C38/38
CPC分类号： C22C38/22 , C22C38/02 , C22C38/38
摘要： A high-strength cold-rolled steel sheet is disclosed that comprises a steel including C: 0.05 to 0.13 mass %, Si: 0.5 to 2.5 mass %, and Mn: 0.5 to 3.5 mass %, as well as Mo: 0.05 to 0.6 mass % and/or Cr: 0.05 to 1.0 mass %. The steel sheet is of composite structure of a ferrite+a second phase wherein the second phase has an area rate of 30 to 70% and is combined approximately in a shape of a network; a circle-equivalent average ferrite grain size is not more than 10 μm; and a circle-equivalent diameter of ferrite grain aggregate that exists continuously in an area surrounded by the second phase is not more than 3 times of the average ferrite grain size. The steel sheet has a high-strength and satisfies a balance of elongation and stretch flange formability (ratio of hole expansion) at a higher level.
摘要翻译：公开了一种高强度冷轧钢板，其包括C：0.05〜0.13质量％，Si：0.5〜2.5质量％，Mn：0.5〜3.5质量％，Mo：0.05〜0.6质量％％和/或Cr：0.05〜1.0质量％。所述钢板为铁素体+第二相的复合结构，其中第二相的面积率为30〜70％，大致为网状; 圆当量平均铁素体晶粒尺寸不大于10um; 并且在由第二相包围的区域中连续存在的铁素体晶粒集合体的圆当量直径不大于平均铁素体晶粒尺寸的3倍。钢板具有高强度，并且在较高水平上满足伸长率和拉伸凸缘成形性（孔膨胀比）的平衡。

9. 发明授权

US06280538B1 Hot rolled high strength steel sheet with excellent formability 失效
标题翻译：热轧高强度钢板，成型性优良
公开(公告)号：US06280538B1
公开(公告)日：2001-08-28
申请号：US09438374
申请日：1999-11-12
申请人： Tetsuo Soshiroda , Yoichi Mukai , Michiharu Nakaya
发明人： Tetsuo Soshiroda , Yoichi Mukai , Michiharu Nakaya
IPC分类号： C22C3802
CPC分类号： C22C38/02 , C21D8/0226 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C22C38/04 , C22C38/06 , Y02P10/212
摘要： A hot rolled high strength steel sheet having a satisfactory strength-elongation balance and an stretch frangibility and with excellent formability comprising a steel, which contains: C :0.05 ˜ 0.15% Si :0.5 ˜ 2.0% Mn :0.5 ˜ 2.0% P :0.05% or less S :0.010% or less Al :0.005 ˜ less than 0.10%, and the balance of Fe and inevitable impurities, and in which the metal structure mainly comprises three phases of ferrite, retained austenite and bainite, the amount of the ferrite [V(F)] is 60˜95 area %, the amount of the retained austenite [V(&ggr;)] is 3˜15 vol %, the amount of the bainite [V(B)] in the area ratio is 1.5 times or more of the amount of the retained austenite [V(&ggr;)], and the average hardness of the bainite is 240-400 Hv.
摘要翻译：一种具有令人满意的强度 - 伸长率平衡和拉伸脆性并且具有优异的可成形性的热轧高强度钢板，其包含：余量的Fe和不可避免的杂质，其中金属结构主要包括三相铁素体，残留奥氏体和贝氏体，铁素体[V（F）]的含量为60〜95面积％，残留奥氏体[V（γ）]的量为3〜15体积％，贝氏体[V （B）]的面积比为残留奥氏体量[V（γ）]的1.5倍以上，贝氏体的平均硬度为240〜400Hv。

10. 发明授权

US08986468B2 High-strength cold-rolled steel sheet excellent in coating adhesion, workability and hydrogen embrittlement resistance, and steel component for automobile 有权
标题翻译：涂层粘合性，加工性和耐氢脆性优异的高强度冷轧钢板，汽车用钢部件
公开(公告)号：US08986468B2
公开(公告)日：2015-03-24
申请号：US11908616
申请日：2006-03-23
申请人： Masaaki Miura , Shinji Kozuma , Yoichi Mukai , Yoshinobu Omiya
发明人： Masaaki Miura , Shinji Kozuma , Yoichi Mukai , Yoshinobu Omiya
IPC分类号： C22C38/00 , C21D8/04 , C21D9/46 , C21D9/48 , C22C38/04 , C22C38/02 , C22C38/06
CPC分类号： C22C38/02 , C21D8/0468 , C21D9/46 , C21D9/48 , C21D2211/004 , C21D2211/005 , C21D2211/008 , C22C38/04 , C22C38/06
摘要： A cold rolled steel sheet satisfying on the basis of percent by mass the chemical composition of 0.06-0.6% C, 0.1-2% Si, 0.01-3% Al, 1-4% Si+Al, 1-6% Mn, Si/Mn≦0.40, in which there exists 10 or more pieces/100 μm2 of Mn—Si composite oxide having Mn—Si atom ratio (Mn/Si) of 0.5 or over and major axis of from 0.01 μm to 5 μm and also having a covering ratio of 10% or below at which the surface of the steel sheet is covered with oxide containing Si as the main component.
摘要翻译：冷轧钢板以化学组成为0.06-0.6％C，0.1-2％Si，0.01-3％Al，1-4％Si + Al，1-6％Mn，Si 其中存在Mn-Si原子比（Mn / Si）为0.5以上且长轴为0.01μm〜5μm的Mn-Si复合氧化物的10个以上/100μm2以上的MnMnnnE.0.40，并且还具有钢板的表面被包含以Si为主要成分的氧化物覆盖的10％以下的覆盖率。

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