公开(公告)号：US09452792B2

公开(公告)日：2016-09-27

申请号：US14116847

申请日：2012-04-23

申请人： Shusaku Takagi ,  Kaneharu Okuda ,  Yoshikiyo Tamai ,  Takeshi Fujita ,  Yoshitaka Okitsu ,  Tadashi Naito ,  Naoki Takaki ,  Tomoaki Sugiura

发明人： Shusaku Takagi ,  Kaneharu Okuda ,  Yoshikiyo Tamai ,  Takeshi Fujita ,  Yoshitaka Okitsu ,  Tadashi Naito ,  Naoki Takaki ,  Tomoaki Sugiura

IPC分类号： C22C38/04 ,  C22C38/12 ,  C22C38/06 ,  C21D7/00 ,  B62D29/00 ,  C21D9/00 ,  C22C38/00 ,  C22C38/02 ,  B21D53/88 ,  C21D9/46

CPC分类号： B62D29/007 ,  B21D53/88 ,  C21D9/0068 ,  C21D9/46 ,  C21D2211/001 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  Y10T29/49622

摘要： A vehicle collision energy absorbing member is excellent in collision energy absorbing performance in the axial direction upon collision. The vehicle collision energy absorbing member is formed of a high strength thin steel sheet having TS of at least 980 MPa and having an n-value and a limit bending radius Rc satisfying the following Formula: Rc/t≦1.31×ln(n)+5.21.

摘要翻译： 车辆碰撞能量吸收构件在碰撞时轴向碰撞能量吸收性能优异。 车辆碰撞能量吸收部件由具有至少980MPa的TS且具有满足下式的n值和极限弯曲半径Rc的高强度薄钢板形成：Rc /t≤1.31×ln（n）+ 5.21。

公开(公告)号：US20100310897A1

公开(公告)日：2010-12-09

申请号：US12792945

申请日：2010-06-03

申请人： Naoki Takaki ,  Yoshitaka Okitsu

发明人： Naoki Takaki ,  Yoshitaka Okitsu

IPC分类号： B32B1/08 ,  B32B15/01

CPC分类号： B62D29/007 ,  Y10T428/12264 ,  Y10T428/12292 ,  Y10T428/12354 ,  Y10T428/1241 ,  Y10T428/12965 ,  Y10T428/12986

摘要： A high-strength steel sheet having high strength and ability to absorb impact energy to a high degree is formed into a strengthening member for an vehicle, having both superior energy absorption efficiency and bonding properties. The high-strength member has a high-strength steel sheet having not less than 5000 MPa of gradient du/de of a stress-strain diagram in a range of 3 to 7% of true strain obtained in a tension test, and a steel sheet having 0.3 to 0.85 of tension strength ratio against tension strength of the high-strength steel sheet, the steel sheets bonded at their ends with space extending in a prescribed direction between the steel sheets, and a load is to be applied on the member from the prescribed direction when the member is acted upon.

摘要翻译： 形成具有高强度和能够高度吸收冲击能量的高强度钢板，其具有优异的能量吸收效率和接合性能。 高强度部件具有在拉伸试验中得到的真应变的3〜7％的范围内的应力应变图的不小于5000MPa的梯度du / de的高强度钢板， 相对于高强度钢板的拉伸强度的拉伸强度比为0.3〜0.85，在钢板的端部具有沿规定方向延伸的空间的钢板与负载相连接， 当成员采取行动时指定方向。

公开(公告)号：US08252428B2

公开(公告)日：2012-08-28

申请号：US12792945

申请日：2010-06-03

申请人： Naoki Takaki ,  Yoshitaka Okitsu

发明人： Naoki Takaki ,  Yoshitaka Okitsu

IPC分类号： B32B1/08 ,  B32B15/18 ,  B32B3/28

CPC分类号： B62D29/007 ,  Y10T428/12264 ,  Y10T428/12292 ,  Y10T428/12354 ,  Y10T428/1241 ,  Y10T428/12965 ,  Y10T428/12986

摘要： A high-strength steel sheet having high strength and ability to absorb impact energy to a high degree is formed into a strengthening member for an vehicle, having both superior energy absorption efficiency and bonding properties. The high-strength member has a high-strength steel sheet having not less than 5000 MPa of gradient du/de of a stress-strain diagram in a range of 3 to 7% of true strain obtained in a tension test, and a steel sheet having 0.3 to 0.85 of tension strength ratio against tension strength of the high-strength steel sheet, the steel sheets bonded at their ends with space extending in a prescribed direction between the steel sheets, and a load is to be applied on the member from the prescribed direction when the member is acted upon.

摘要翻译： 形成具有高强度和能够高度吸收冲击能量的高强度钢板，其具有优异的能量吸收效率和接合性能。 高强度部件具有在拉伸试验中得到的真应变的3〜7％的范围内的应力应变图的不小于5000MPa的梯度du / de的高强度钢板， 相对于高强度钢板的拉伸强度的拉伸强度比为0.3〜0.85，在钢板的端部具有沿规定方向延伸的空间的钢板与负载相连接， 当成员采取行动时指定方向。

公开(公告)号：US20120070330A1

公开(公告)日：2012-03-22

申请号：US13123649

申请日：2008-11-05

申请人： Masashi Ishii ,  Sven Leonhardt ,  Yoshitaka Okitsu ,  Klaus Brokmeier ,  Georg Frommeyer ,  Ursula Frommeyer ,  Astrid Frommeyer

发明人： Masashi Ishii ,  Sven Leonhardt ,  Yoshitaka Okitsu ,  Klaus Brokmeier ,  Georg Frommeyer ,  Ursula Frommeyer ,  Astrid Frommeyer

IPC分类号： C22C38/58 ,  C22C38/44 ,  B21B1/02 ,  C22C38/42

CPC分类号： C22C38/02 ,  B62D25/04 ,  B62D29/007 ,  C21D2211/001 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/50 ,  C22C38/58

摘要： A high-strength steel sheet comprises, by weight, not less than 0.25% and not more than 0.5% of C, not less than 4% and not more than 14% of Mn, not less than 6.5% and not more than 9.5% of Cr, and not less than 0.3% and not more than 3% of Si. The high-strength steel sheet satisfies the following formulas 1 and 2 and mainly consists of austenite, and the high-strength steel sheet has yield strength of not less than 1000 MPa and total elongation of not less than 20%. 12≦2.0Si+5.5Al+Cr+1.5Mo≦25   (1) 13 ≦30C+0.5Mn+0.3Cu+Ni+25N≦17   (2) (Each element symbol in the above formulas indicates the content (weight %) of the element)

摘要翻译： 高强度钢板按重量计含有不少于0.25％且不大于0.5％的C，不小于4％和不超过14％的Mn，不小于6.5％和不超过9.5％ 的Cr，且不小于0.3％且不大于3％的Si。 高强度钢板满足下列公式1和2，主要由奥氏体组成，高强度钢板的屈服强度不小于1000MPa，总伸长率不低于20％。 12＆nlE; 2.0Si + 5.5Al + Cr + 1.5Mo＆nlE; 25（1）13＆nlE; 30C + 0.5Mn + 0.3Cu + Ni + 25N＆lt; 17（2）（上式中的每个元件符号表示含量（重量％ ）的元素）

公开(公告)号：US08263234B2

公开(公告)日：2012-09-11

申请号：US12746663

申请日：2008-12-05

申请人： Yoshitaka Okitsu

发明人： Yoshitaka Okitsu

IPC分类号： B32B15/00

CPC分类号： B23K11/16 ,  B23K9/23 ,  B23K26/32 ,  B23K2101/006 ,  B23K2103/04 ,  B23K2103/05 ,  B23K2103/50 ,  C21D8/0205 ,  C21D9/46 ,  C21D9/50 ,  C21D2201/03 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  Y10T428/12965

摘要： A high-strength steel sheet includes a stress-strain diagram obtained by a tensile test of the steel, and a gradient of stress in the stress-strain diagram, wherein the gradient dσ/dε in 3 to 7% of true strain is 5000 MPa or more.

摘要翻译： 高强度钢板包括通过钢的拉伸试验获得的应力应变图和应力 - 应变图中的应力梯度，其中梯度d＆sgr; / d＆ 真实应变的3〜7％为5000MPa以上。

公开(公告)号：US20080131305A1

公开(公告)日：2008-06-05

申请号：US11792090

申请日：2005-11-30

申请人： Yoshitaka Okitsu

发明人： Yoshitaka Okitsu

IPC分类号： C22C38/00 ,  C21D9/46 ,  C22C38/22 ,  C22C38/50

CPC分类号： C22C38/04 ,  C21D8/02 ,  C21D2201/03 ,  C21D2211/005 ,  C22C38/02 ,  C22C38/06 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54

摘要： A high-strength steel sheet has a metal structure consisting of a ferrite phase in which a hard second phase is dispersed and has 3 to 30% of an area ratio of the hard second phase. In the ferrite phase, the area ratio of nanograins of which grain sizes are not more than 1.2 μm is 15 to 90%, and dS as an average grain size of nanograins of which grain sizes are not more than 1.2 μm and dL as an average grain size of micrograins of which grain sizes are more than 1.2 μm satisfy an equation (dL/dS≧3).

摘要翻译： 高强度钢板具有由硬质二相分散的铁素体相组成的金属结构体，硬相的面积比为3〜30％。 在铁素体相中，晶粒尺寸不大于1.2μm的纳米晶粒的面积比为15〜90％，作为平均晶粒尺寸的dS，粒径不大于1.2μm，dL为平均粒径 粒度大于1.2μm的微晶粒的粒径满足方程式（dL / dS> = 3）。

公开(公告)号：US09267193B2

公开(公告)日：2016-02-23

申请号：US13123649

申请日：2008-11-05

申请人： Masashi Ishii ,  Sven Leonhardt ,  Yoshitaka Okitsu ,  Klaus Brokmeier ,  Georg Frommeyer ,  Ursula Frommeyer ,  Astrid Frommeyer

发明人： Masashi Ishii ,  Sven Leonhardt ,  Yoshitaka Okitsu ,  Klaus Brokmeier ,  Georg Frommeyer

IPC分类号： C22C38/58 ,  C22C38/02 ,  B62D25/04 ,  B62D29/00 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/50

CPC分类号： C22C38/02 ,  B62D25/04 ,  B62D29/007 ,  C21D2211/001 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/50 ,  C22C38/58

摘要： A high-strength steel sheet comprises, by weight, not less than 0.25% and not more than 0.5% of C, not less than 4% and not more than 14% of Mn, not less than 6.5% and not more than 9.5% of Cr, and not less than 0.3% and not more than 3% of Si. The high-strength steel sheet satisfies formulas 1 and 2, formula (1) being 12≦2.0Si+5.5Al+Cr+1.5Mo≦25 and formula (2) being 13≦30C+0.5Mn+0.3Cu+Ni+25N≦17, and mainly consists of austenite, and the high-strength steel sheet has yield strength of not less than 1000 MPa and total elongation of not less than 20%. In formulas 1 and 2, each element in the above formulas indicates the content, in weight %, of the element.

摘要翻译： 高强度钢板按重量计含有不少于0.25％且不大于0.5％的C，不小于4％和不超过14％的Mn，不小于6.5％和不超过9.5％ 的Cr，且不小于0.3％且不大于3％的Si。 高强度钢板满足公式1和2，式（1）为12＆nlE; 2.0Si + 5.5Al + Cr + 1.5Mo＆nlE; 25和式（2）为13＆lt; 1E; 30C + 0.5Mn + 0.3Cu + Ni + 25N＆ ; 17，主要由奥氏体组成，高强度钢板的屈服强度不小于1000MPa，总伸长率不小于20％。 在式1和式2中，上式中的每个元素表示元素的含量（以重量％计）。

公开(公告)号：US08177924B2

公开(公告)日：2012-05-15

申请号：US12302724

申请日：2007-06-01

申请人： Yoshitaka Okitsu

发明人： Yoshitaka Okitsu

IPC分类号： C22C38/00 ,  C21D11/00

CPC分类号： C22C38/02 ,  C21D6/005 ,  C21D9/46 ,  C21D2211/005 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/18

摘要： A high-strength steel sheet comprises a metallic structure consisting of a ferrite phase and a hard second phase dispersed in the ferrite phase, the hard second phase in the metallic structure having an area ratio of 30 to 70%, and the ferrite of which grain sizes are not more than 1.2 μm having an area ratio of 15 to 90% in the ferrite phase. The term ds is an average grain size of the ferrite of which grain sizes are not more than 1.2 μm, the term dL is an average grain size of ferrite of which grain sizes are more than 1.2 μm, and the ds and the dL satisfy the following equation (1): dL/ds≧3  (1).

摘要翻译： 高强度钢板包括由铁素体相和分散在铁素体相中的硬质第二相组成的金属结构，金属结构中的硬质第二相的面积比为30〜70％，铁素体的粒子 在铁素体相中，面积比为15〜90％的尺寸不大于1.2μm。 术语“ds”是晶粒尺寸不大于1.2μm的铁素体的平均晶粒尺寸，术语dL是晶粒尺寸大于1.2μm的铁素体的平均晶粒尺寸，ds和dL满足 以下公式（1）：dL /ds≥3（1）。

公开(公告)号：US20090188589A1

公开(公告)日：2009-07-30

申请号：US12302724

申请日：2007-06-01

申请人： Yoshitaka Okitsu

发明人： Yoshitaka Okitsu

IPC分类号： C21D11/00 ,  C22C38/00

CPC分类号： C22C38/02 ,  C21D6/005 ,  C21D9/46 ,  C21D2211/005 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/18

摘要： A high-strength steel sheet comprises a metallic structure consisting of a ferrite phase and a hard second phase dispersed in the ferrite phase, the hard second phase in the metallic structure having an area ratio of 30 to 70%, and the ferrite of which grain sizes are not more than 1.2 μm having an area ratio of 15 to 90% in the ferrite phase. The term ds is an average grain size of the ferrite of which grain sizes are not more than 1.2 μm, the term dL is an average grain size of ferrite of which grain sizes are more than 1.2 μm, and the ds and the dL satisfy the following equation (1): dL/ds≧3  (1).

摘要翻译： 高强度钢板包括由铁素体相和分散在铁素体相中的硬质第二相组成的金属结构，金属结构中的硬质第二相的面积比为30〜70％，铁素体的粒子 在铁素体相中，面积比为15〜90％的尺寸不超过1.2μm。 术语“ds”是晶粒尺寸不大于1.2μm的铁素体的平均晶粒尺寸，术语dL是晶粒尺寸大于1.2μm的铁素体的平均晶粒尺寸，ds和dL满足 以下公式（1）：<？in-line-formula description =“In-line Formulas”end =“lead”？> dL / ds> = 3（1）<？in-line-formula description = 行公式“end =”tail“？>

公开(公告)号：US20110008648A1

公开(公告)日：2011-01-13

申请号：US12746663

申请日：2008-12-05

申请人： Yoshitaka Okitsu

发明人： Yoshitaka Okitsu

IPC分类号： B32B15/18 ,  C22C38/00 ,  C21D1/00 ,  B32B15/01

CPC分类号： B23K11/16 ,  B23K9/23 ,  B23K26/32 ,  B23K2101/006 ,  B23K2103/04 ,  B23K2103/05 ,  B23K2103/50 ,  C21D8/0205 ,  C21D9/46 ,  C21D9/50 ,  C21D2201/03 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  Y10T428/12965

摘要： A high-strength steel sheet includes a stress-strain diagram obtained by a tensile test of the steel, and a gradient of stress in the stress-strain diagram, wherein the gradient dσ/dε in 3 to 7% of true strain is 5000 MPa or more.

摘要翻译： 高强度钢板包括通过钢的拉伸试验获得的应力应变图和应力 - 应变图中的应力梯度，其中梯度d＆sgr; / d＆ 真实应变的3〜7％为5000MPa以上。