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1. 发明授权

US08597439B2 High-strength cold rolled steel sheet having excellent formability, and plated steel sheet 有权
标题翻译：优异的成形性的高强度冷轧钢板，镀钢板
公开(公告)号：US08597439B2
公开(公告)日：2013-12-03
申请号：US12640229
申请日：2009-12-17
申请人： Shushi Ikeda , Yoichi Mukai , Hiroshi Akamizu , Koichi Makii , Koichi Sugimoto , Shunichi Hashimoto , Kenji Saito
发明人： Shushi Ikeda , Yoichi Mukai , Hiroshi Akamizu , Koichi Makii , Koichi Sugimoto , Shunichi Hashimoto , Kenji Saito
IPC分类号： C22C38/12
CPC分类号： C22C38/02 , C22C38/04 , C22C38/12
摘要： A high-strength cold rolled steel sheet contains:0.10 to 0.28% of C,1.0 to 2.0% of Si,1.0 to 3.0% of Mn, and0.03 to 0.10% of Nb in terms of % by mass,Al is controlled to 0.5 or less, P is controlled to 0.15% or less, and S is controlled to 0.02% or less, and residual austenite accounts for 5 to 20%, bainitic ferrite accounts for 50% or more, and polygonal ferrite accounts for 30% or less (containing 0%), of the entire structure, and a mean number of residual austenite blocks is 20 or more as determined when the random area (15 μm×15 μm) is observed by EBSP (electron back scatter diffraction pattern).
摘要翻译：高强度冷轧钢板包含：以质量％计，C：0.10〜0.28％，Si：1.0〜2.0％，Mn：1.0〜3.0％，Nb：0.03〜0.10％，Al：以下，P为0.15％以下，S为0.02％以下，残留奥氏体为5〜20％，贝氏体铁素体为50％以上，多边形铁素体为30％以下（含有0％），并且当通过EBSP（电子背散射衍射图）观察到随机面积（15mum×15mum））时，残留奥氏体块的平均数为20以上。

2. 发明授权

US06306527B1 Hot-dip galvanized steel sheet and process for production thereof 有权
标题翻译：热镀锌钢板及其制造方法
公开(公告)号：US06306527B1
公开(公告)日：2001-10-23
申请号：US09685096
申请日：2000-10-11
申请人： Shushi Ikeda , Koichi Makii , Yosuke Shindo , Shunichi Hashimoto , Takahiro Kashima , Hiroshi Akamizu , Masahiro Nomura
发明人： Shushi Ikeda , Koichi Makii , Yosuke Shindo , Shunichi Hashimoto , Takahiro Kashima , Hiroshi Akamizu , Masahiro Nomura
IPC分类号： B32B1518
CPC分类号： C23C2/40 , C21D1/185 , C21D8/0273 , C21D2211/005 , C21D2211/008 , C23C2/02 , Y10S428/939 , Y10T428/12799
摘要： A hot-dip galvanized steel sheet which is produced from a cold-rolled steel sheet, as a base steel sheet, consisting essentially of C: 0.010-0.06 wt %, Si: no more than 0.5 wt %, Mn: no less than 0.5 wt % and less than 2.0 wt %, P: no more than 0.20 wt %, S: no more than 0.01 wt %, Al: 0.005-0.10 wt %, N: no more than 0.005 wt %, Cr: no more than 1.0 wt %, Mn+1.3Cr: 1.9-2.3 wt %, Fe: remainder, and having a structure composed of ferrite and a second phase containing martensite, said second phase in the structure accounting for no more than 20% in terms of area and martensite in the second phase accounting for no less than 50%, and which has a zinc-plated layer formed on the surface thereof by hot-dip galvanizing or hot-dip galvannealing. A process for production of said hot-dip galvanized steel sheet. This steel sheet has a composite structure containing martensite and yet it has a low strength (no higher than 500 MPa) and also has good strength-ductility balance.
摘要翻译：一种由冷轧钢板作为基本钢板制成的热浸镀锌钢板，其基本上由C：0.010-0.06重量％，Si：不大于0.5重量％，Mn：不小于0.5 重量％且小于2.0重量％，P：不大于0.20重量％，S：不大于0.01重量％，Al：0.005-0.10重量％，N：不大于0.005重量％，Cr：不大于1.0 重量％，Mn + 1.3Cr：1.9-2.3重量％，Fe：余量，并且具有由铁素体构成的结构和含有马氏体的第二相，所述结构中的所述第二相占面积不大于20％第二相中的马氏体不低于50％，并且通过热浸镀锌或热浸镀锌合金在其表面形成有镀锌层。一种生产所述热浸镀锌钢板的方法。该钢板具有包含马氏体的复合结构，但其强度低（不高于500MPa），并且还具有良好的强度 - 延展性平衡。

3. 发明申请

US20090242085A1 DUAL PHASE STEEL SHEET WITH GOOD BAKE-HARDENING PROPERTIES 审中-公开
标题翻译：双相钢板具有良好的耐烧结性能
公开(公告)号：US20090242085A1
公开(公告)日：2009-10-01
申请号：US12477299
申请日：2009-06-03
申请人： Shushi IKEDA , Koichi Makii , Hiroshi Akamizu
发明人： Shushi IKEDA , Koichi Makii , Hiroshi Akamizu
IPC分类号： C21D8/02 , C22C38/00
CPC分类号： C21D1/20 , C21D8/02 , C21D8/0426 , C21D8/0436 , C21D8/0473 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12
摘要： A dual phase steel sheet with good bake-hardening properties is provided. The steel sheet is characterized in containing (in terms of percent by mass) C: no less than 0.06% and less than 0.25%; Si+Al: 0.5 to 3%; Mn: 0.5 to 3%; P: no more than 0.15%; and S: no more than 0.02%; and also meeting the following condition (in terms of space factor) that retained austenite is at least 3%, bainite is at least 30%, and ferrite is no more than 50%, and further characterized in differing in stress larger than 50 MPa before and after application of 2% pre-strain and ensuing heat treatment for paint baking at 170° C. for 20 minutes. The steel sheet has well-balanced strength and workability, exhibits good bake-hardening properties at the time of paint baking, and offers good resistance to natural aging.
摘要翻译：提供了具有良好烘烤硬化性能的双相钢板。钢板的特征在于含有（以质量％计）C：不小于0.06％且小于0.25％; Si + Al：0.5〜3％ Mn：0.5〜3％ P：不超过0.15％; S：不大于0.02％; 并且还满足以下条件（以空间因子计），残留奥氏体为3％以上，贝氏体为30％以上，铁素体为50％以下，其特征在于应力大于50MPa以下并在施加2％预应变之后，并在170℃下进行油漆烘烤20分钟。钢板具有平衡的强度和加工性，在烤漆时具有良好的烘烤硬化性能，并且具有良好的耐自然老化性。

4. 发明授权

US09194015B2 Dual phase steel sheet with good bake-hardening properties 有权
标题翻译：双相钢板具有良好的烘烤硬化性能
公开(公告)号：US09194015B2
公开(公告)日：2015-11-24
申请号：US12477299
申请日：2009-06-03
申请人： Shushi Ikeda , Koichi Makii , Hiroshi Akamizu
发明人： Shushi Ikeda , Koichi Makii , Hiroshi Akamizu
IPC分类号： C21D8/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C21D1/20 , C21D8/04 , C22C38/12
CPC分类号： C21D1/20 , C21D8/02 , C21D8/0426 , C21D8/0436 , C21D8/0473 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12
摘要： A dual phase steel sheet with good bake-hardening properties is provided. The steel sheet is characterized in containing (in terms of percent by mass) C: no less than 0.06% and less than 0.25%; Si+Al: 0.5 to 3%; Mn: 0.5 to 3%; P: no more than 0.15%; and S: no more than 0.02%; and also meeting the following condition (in terms of space factor) that retained austenite is at least 3%, bainite is at least 30%, and ferrite is no more than 50%, and further characterized in differing in stress larger than 50 MPa before and after application of 2% pre-strain and ensuing heat treatment for paint baking at 170° C. for 20 minutes. The steel sheet has well-balanced strength and workability, exhibits good bake-hardening properties at the time of paint baking, and offers good resistance to natural aging.
摘要翻译：提供了具有良好烘烤硬化性能的双相钢板。钢板的特征在于含有（以质量％计）C：不小于0.06％且小于0.25％; Si + Al：0.5〜3％ Mn：0.5〜3％ P：不超过0.15％; S：不大于0.02％; 并且还满足以下条件（以空间因子计），残余奥氏体为3％以上，贝氏体为30％以上，铁素体为50％以下，其特征在于应力大于50MPa以下并在施加2％预应变之后，并在170℃下进行油漆烘烤20分钟。钢板具有平衡的强度和加工性，在烤漆时具有良好的烘烤硬化性能，并且具有良好的耐自然老化性。

5. 发明授权

US07314532B2 High-strength forged parts having high reduction of area and method for producing same 有权
标题翻译：高强度锻造件的面积减少和制造方法
公开(公告)号：US07314532B2
公开(公告)日：2008-01-01
申请号：US10785080
申请日：2004-02-25
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： C22C38/02 , C22C38/04 , 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 grain diameter of 5 μm or less and a content represented by 50×[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 5μm以下，由50×[C] <[VγR<150×[C]表示的含量，其中[VγR]表示残留奥氏体（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。

6. 发明授权

US07008488B2 High-strength steel sheet having excellent workability and production process therefor 有权
标题翻译：具有优异的加工性的高强度钢板及其制造方法
公开(公告)号：US07008488B2
公开(公告)日：2006-03-07
申请号：US10614821
申请日：2003-07-09
申请人： Hiroshi Akamizu , Shushi Ikeda , Koichi Makii
发明人： Hiroshi Akamizu , Shushi Ikeda , Koichi Makii
IPC分类号： C22C38/02 , C22C38/04 , C21D8/02
CPC分类号： C21D8/021 , C21D1/19 , C21D8/0226 , C21D2211/001 , C21D2211/005 , C21D2211/008 , C22C38/02 , C22C38/04
摘要： A high-strength steel sheet comprises carbon: 0.06 to 0.25 mass %, Si: 0.5 to 3.5 mass % and Mn: 0.7 to 4 mass %. Its mother structure is ferrite, its second phase structure comprises martensite and the residual austenite and the second phase structure measured by image analysis has an area fraction of 25% or less based on the total structure. The steel sheet satisfies the following requirements (1) to (3): (1) the volume fraction (Vtγhd R) of the residual austenite is 5% or more; (2) the ratio (SFγR/VtγR) of the area fraction (SFγR) of the residual austenite within ferrite to VtγR is 0.65 or more; and (3) the ratio [α2/(α1+γR)] of the space factor (α2) of martensite to the second phase structure (α1+γR) is 0.25 to 0.60. The steel sheet has excellent balance between strength and local elongation, and a low yield ratio.
摘要翻译：高强度钢板包含：0.06〜0.25质量％的碳，Si：0.5〜3.5质量％，Mn：0.7〜4质量％。其母体结构是铁素体，其第二相结构包括马氏体，残余奥氏体和通过图像分析测量的第二相结构基于总结构具有25％或更小的面积分数。钢板满足以下要求（1）〜（3）：（1）残余奥氏体的体积分数（Vtgammahd R）为5％以上; （2）铁素体中的残余奥氏体的面积率（SFgamma R）与Vtgamma之间的比值（SFgamma R/ Vtgamma R） R S为0.65以上; 和（3）马氏体相对于第二相结构（α1+γ'）的空间因子（α2）的比值[α2/（α1+γ' 为0.25〜0.60。钢板在强度和局部伸长率之间具有优异的平衡，并且产率低。

7. 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。

8. 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。

9. 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。

10. 发明申请

US20100092332A1 HIGH-STRENGTH COLD ROLLED STEEL SHEET HAVING EXCELLENT FORMABILITY, AND PLATED STEEL SHEET 有权
标题翻译：高强度冷轧钢板，具有优异的可铸性和镀层钢板
公开(公告)号：US20100092332A1
公开(公告)日：2010-04-15
申请号：US12640229
申请日：2009-12-17
申请人： Shushi IKEDA , Yoichi Mukai , Hiroshi Akamizu , Koichi Makii , Koichi Sugimoto , Shunichi Hashimoto , Kenji Saito
发明人： Shushi IKEDA , Yoichi Mukai , Hiroshi Akamizu , Koichi Makii , Koichi Sugimoto , Shunichi Hashimoto , Kenji Saito
IPC分类号： C22C38/04 , C22C38/12 , C22C38/02
CPC分类号： C22C38/02 , C22C38/04 , C22C38/12
摘要： To provide a high-strength cold rolled steel sheet that has well-balanced tensile strength and elongation as well as well-balanced tensile strength and stretch-flangeability, and a plated steel sheet manufactured by plating the steel sheet.The high-strength cold rolled steel sheet contains: 0.10 to 0.28% of C, 1.0 to 2.0% of Si, 1.0 to 3.0% of Mn, and 0.03 to 0.10% of Nb in terms of % by mass, wherein the content of Al is controlled to 0.5 or less, the content of P is controlled to 0.15% or less, and the content of S is controlled to 0.02% or less, and wherein residual austenite accounts for 5 to 20%, bainitic ferrite accounts for 50% or more, and polygonal ferrite accounts for 30% or less (containing 0%), of the entire structure, and wherein a mean number of residual austenite blocks is 20 or more as determined when the random area (15 μm×15 μm) is observed by EBSP (electron back scatter diffraction pattern).
摘要翻译：提供具有良好的拉伸强度和伸长率以及平衡的拉伸强度和拉伸凸缘性的高强度冷轧钢板，以及通过电镀钢板而制成的镀覆钢板。高强度冷轧钢板含有：以质量％计，C：0.10〜0.28％，Si：1.0〜2.0％，Mn：1.0〜3.0％，Nb：0.03〜0.10％控制在0.5以下，P的含量控制在0.15％以下，S的含量控制在0.02％以下，残留奥氏体占5〜20％，贝氏体铁素体占50％，更多的是多边形铁素体占整个结构的30％以下（含有0％），并且其中当观察到随机区域（15μm×15μm）时确定的残余奥氏体块的平均数为20以上通过EBSP（电子背散射衍射图）。

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