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11. 发明授权

US09267196B2 Method of producing a hot rolled steel sheet 有权
标题翻译：热轧钢板的制造方法
公开(公告)号：US09267196B2
公开(公告)日：2016-02-23
申请号：US14000143
申请日：2012-03-05
申请人： Riki Okamoto , Nobuhiro Fujita , Manabu Takahashi , Kunio Hayashi , Tetsuo Kishimoto , Kazuaki Nakano , Takeshi Yamamoto
发明人： Riki Okamoto , Nobuhiro Fujita , Manabu Takahashi , Kunio Hayashi , Tetsuo Kishimoto , Kazuaki Nakano , Takeshi Yamamoto
IPC分类号： C21D8/04 , C22C38/04 , C22C38/02 , C22C38/38 , C22C38/00 , C22C38/06 , B21B1/26 , C22C38/08 , C22C38/10 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/34 , C21D9/46 , C21D8/02 , C22C38/18 , C21D6/00
CPC分类号： C22C38/38 , B21B1/26 , C21D6/005 , C21D6/008 , C21D8/0226 , C21D8/0263 , C21D9/46 , C21D2211/005 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/10 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/34
摘要： In a hot-rolled sheet, an average value of pole densities of an orientation group {100} to {223} , which is represented by an arithmetic mean of pole densities of orientations {100} , {116} , {114} , {112} , and {223} in a thickness center portion of a thickness range of ⅝ to ⅜ from a surface of the steel sheet, is 1.0 to 6.5 and a pole density of a crystal orientation {332} is 1.0 to 5.0; and a Lankford value rC in a direction perpendicular to a rolling direction is 0.70 to 1.10 and a Lankford value r30 in a direction that forms 30° with respect to the rolling direction is 0.70 to 1.10.
摘要翻译：在热轧板中，取向组{100} <011>至{223} <110>的极点密度的平均值由取向{100} <011>的极点密度的算术平均值表示，在钢板表面的厚度范围为⅝〜a的厚度中心部分的{116} <110>，{114} <110>，{112} <110>和{223} <110> 1.0〜6.5，晶体取向{332} <113>的极点密度为1.0〜5.0; 在与轧制方向垂直的方向上的兰克福德值rC为0.70〜1.10，相对于轧制方向形成30°的方向的兰克福特值r30为0.70〜1.10。

12. 发明申请

US20130153091A1 HOT-ROLLED STEEL SHEET, COLD-ROLLED STEEL SHEET, GALVANIZED STEEL SHEET, AND METHODS OF MANUFACTURING THE SAME 有权
标题翻译：热轧钢板，冷轧钢板，钢化钢板及其制造方法
公开(公告)号：US20130153091A1
公开(公告)日：2013-06-20
申请号：US13811902
申请日：2011-07-27
申请人： Nobuhiro Fujita , Kunio Hayashi , Riki Okamoto , Manabu Takahashi , Tetsuo Kishimoto , Hiroshi Yoshida
发明人： Nobuhiro Fujita , Kunio Hayashi , Riki Okamoto , Manabu Takahashi , Tetsuo Kishimoto , Hiroshi Yoshida
IPC分类号： C21D8/02 , C25D5/36 , C22C38/58 , C22C38/54 , C22C38/52 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/40 , C22C38/38 , C22C38/34 , C22C38/32 , C22C38/30 , C22C38/28 , C22C38/26 , C22C38/24 , C22C38/22 , C22C38/20 , C22C38/18 , C22C38/16 , C22C38/14 , C22C38/12 , C22C38/10 , C22C38/08 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , B21B35/00 , C23C2/02
CPC分类号： C25D3/22 , B21B35/00 , B32B15/013 , C21D6/004 , C21D6/005 , C21D6/007 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0247 , C21D8/0263 , C21D8/0273 , C21D9/46 , C21D2201/05 , C21D2211/00 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/10 , C22C38/105 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/30 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/40 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/58 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40 , C25D5/36
摘要： A hot-rolled steel sheet has an average value of the X-ray random intensity ratio of a {100} to {223} orientation group at least in a sheet thickness central portion that is in a sheet thickness range of ⅝ to ⅜ from a steel sheet surface of 1.0 to 6.0, an X-ray random intensity ratio of a {332} crystal orientation of 1.0 to 5.0, rC which is an r value in a direction perpendicular to a rolling direction of 0.70 to 1.10, and r30 which is an r value in a direction that forms an angle of 30° with respect to the rolling direction of 0.70 to 1.10.
摘要翻译：热轧钢板至少在片材厚度范围的板厚中央部具有{100} <011>〜{223} <110>取向基团的X射线随机强度比的平均值从钢板表面1.0〜6.0的5/8〜3/8，{332} <113>晶体取向的X射线随机强度比为1.0〜5.0，rC为垂直方向的r值轧制方向为0.70〜1.10，r30为相对于轧制方向形成30°角度的方向的r值，r30为0.70〜1.10。

13. 发明授权

US08182740B2 High-strength steel sheets excellent in hole-expandability and ductility 有权
标题翻译：具有优异的孔扩展性和延展性的高强度钢板
公开(公告)号：US08182740B2
公开(公告)日：2012-05-22
申请号：US12584903
申请日：2009-09-14
申请人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
发明人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
IPC分类号： C22C38/04 , C22C38/60 , C22C38/06 , C22C38/14
CPC分类号： C22C38/002 , B21B3/02 , C21D2211/002 , C21D2211/005 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/14
摘要： High-strength steel sheet excellent in hole-expandability and ductility, characterized by; comprising, in mass %, C: not less than 0.01% and not more than 0.20%, Si: not more than 1.5%, Al: not more than 1.5%, Mn: not less than 0.5% and not more than 3.5%, P: not more than 0.2%, S: not less than 0.0005% and not more than 0.009%, N: not more than 0.009%, Mg: not less than 0.0006% and not more than 0.01%, O: not more than 0.005% and Ti: not less than 0.01% and not more than 0.20% and/or Nb: not less than 0.01% and not more than 0.10%, with the balance consisting iron and unavoidable impurities, having Mn %, Mg %, S % and O % satisfying equations (1) to (3), and having the structure primarily comprising one or more of ferrite, bainite and martensite. [Mg %]≧([O %]/16×0.8)×24 (1) [S %]≦([Mg %]/24−[O %]/16×0.8+0.00012)×32 (2) [S %]≦0.0075/[Mn %] (3)
摘要翻译：孔膨胀性和延展性优异的高强度钢板，其特征在于：以质量％计含有：不小于0.01％且不大于0.20％的Si：不大于1.5％，Al：不大于1.5％，Mn：不小于0.5％且不大于3.5％ P：0.2％以下，S：0.0005％以上0.009％以下，N：0.009％以下，Mg：0.0006％以上0.01％以下O：0.005以下％和Ti：不小于0.01％且不大于0.20％和/或Nb：不小于0.01％且不大于0.10％，余量由铁和不可避免的杂质组成，具有Mn％，Mg％，S％和O％满足方程（1）至（3），并且其结构主要包含铁素体，贝氏体和马氏体中的一种或多种。 [Mg％]≥（[O％] / 16×0.8）×24（1）[S％]＆nlE;（[Mg％] / 24- [O％] / 16×0.8±0.00012）×32（2） [S％]＆nlE; 0.0075 / [Mn％]（3）

14. 发明申请

US20070131320A1 High-strength steel sheets excellent in hole-expandability and ductility 有权
标题翻译：具有优异的孔扩展性和延展性的高强度钢板
公开(公告)号：US20070131320A1
公开(公告)日：2007-06-14
申请号：US10576227
申请日：2003-12-26
申请人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
发明人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
IPC分类号： C22C38/06
CPC分类号： C22C38/002 , B21B3/02 , C21D2211/002 , C21D2211/005 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/14
摘要： High-strength steel sheet excellent in hole-expandability and ductility, characterized by; comprising, in mass %, C: not less than 0.01% and not more than 0.20%, Si: not more than 1.5%, Al: not more than 1.5%, Mn: not less than 0.5% and not more than 3.5%, P: not more than 0.2%, S: not less than 0.0005% and not more than 0.009%, N: not more than 0.009%, Mg: not less than 0.0006% and not more than 0.01%, 0: not more than 0.005% and Ti: not less than 0.01% and not more than 0.20% and/or Nb: not less than 0.01% and not more than 0.10%, with the balance consisting iron and unavoidable impurities, having Mn %, Mg %, S % and O % satisfying equations (1) to (3), and having the structure primarily comprising one or more of ferrite, bainite and martensite. [Mg%]≧([O%]/16×0.8)×24 (1) [S%]≦([Mg%]/24−[O%]/16×0.8+0.00012)×32 (2) [S%]≦0.0075/[Mn%] (3)
摘要翻译：孔膨胀性和延展性优异的高强度钢板，其特征在于：以质量％计含有：不小于0.01％且不大于0.20％的Si：不大于1.5％，Al：不大于1.5％，Mn：不小于0.5％且不大于3.5％ P：0.2％以下，S：0.0005％以上0.009％以下，N：0.009％以下，Mg：0.0006％以上0.01％以下0以下0.005以下％和Ti：不小于0.01％且不大于0.20％和/或Nb：不小于0.01％且不大于0.10％，余量由铁和不可避免的杂质组成，具有Mn％，Mg％，S％和O％满足方程（1）至（3），并且其结构主要包含铁素体，贝氏体和马氏体中的一种或多种。 <？in-line-formula description =“In-line Formulas”end =“lead”？> [Mg％]> =（[O％] / 16x0.8）x24（1）<？ =“直线公式”end =“tail”？> <？in-line-formula description =“In-line formula”end =“lead”？> [S％] <=（[Mg％] / [O％] / 16x0.8 + 0.00012）x32（2）<？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line 公式“end =”lead“？> [S％] <= 0.0075 / [Mn％]（3）<？in-line-formula description =”In-line Formulas“end =”tail“？>

15. 发明申请

US20070071997A1 A COLD-ROLLED STEEL SHEET HAVING A TENSILE STRENGTH OF 780 MPA OR MORE, AN EXCELLENT LOCAL FORMABILITY AND A SUPPRESSED INCREASE IN WELD HARDNESS 有权
标题翻译：具有780 MPA或更高的拉伸强度的冷轧钢板，在焊接硬度方面具有优异的局部可制造性和抑制性增加
公开(公告)号：US20070071997A1
公开(公告)日：2007-03-29
申请号：US10557263
申请日：2004-01-09
申请人： Koichi Goto , Riki Okamoto , Hirokazu Taniguchi
发明人： Koichi Goto , Riki Okamoto , Hirokazu Taniguchi
IPC分类号： C22C38/00 , B32B15/18
CPC分类号： C22C38/02 , C21D8/02 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C22C38/04 , C22C38/06 , C22C38/14 , Y10T428/12799 , Y10T428/12965
摘要： The present invention provides a high-strength cold-rolled steel sheet and a high-strength surface treated steel sheet 780 MPa or more in tensile strength, said steel sheets having excellent local formability and suppressed weld hardness increase and being characterized by: said steel sheets containing, in weight, C: 0.05 to 0.09%, Si: 0.4 to 1.3%, Mn: 2.5 to 3.2%, P: 0.001 to 0.05%, N: 0.0005 to 0.006%, Al: 0.005 to 0.1%, Ti: 0.001 to 0.045%, and S in the range stipulated by the following expression (A), with the balance consisting of Fe and unavoidable impurities; the microstructures of said steel sheets being composed of bainite of 7% or more in terms of area percentage and the balance consisting of one or more of ferrite, martensite, tempered martensite and retained austenite; and said components in said steel sheets satisfying the following expressions (C) and (D) when Mneq. is defined by the following expression (B); S≦0.08×(Ti(%)−3.43×N(%)+0.004 . . . (A), where, when a value of the member Ti(%)−3.43×N(%) of said expression (A) is negative, the value is regarded as zero. MIneq.=Mn(%)−0.29 ×Si(%)+6.24×C(%) . . . (B), 950≦(Mneq./(C(%)−(Si(%)/75)))×bainite area percentage (%) . . . (C), C(%)+(Si(%)/20)+(Mn(%)/18)50.30 . . . (D).
摘要翻译：本发明提供了拉伸强度为780MPa以上的高强度冷轧钢板和高强度表面处理钢板，所述钢板具有优异的局部成形性和抑制的焊接硬度，并且其特征在于：所述钢板含有C：0.05〜0.09％，Si：0.4〜1.3％，Mn：2.5〜3.2％，P：0.001〜0.05％，N：0.0005〜0.006％，Al：0.005〜0.1％，Ti：0.001 至0.045％，S在下述表达式（A）所规定的范围内，余量由Fe和不可避免的杂质构成; 所述钢板的微结构由面积百分比为7％以上的贝氏体组成，余量由铁素体，马氏体，回火马氏体和残余奥氏体中的一种以上组成。并且所述钢板中的所述组分满足下列表达式（C）和（D）。由以下表达式（B）定义; 其中，当所述表达式（A）中的成员Ti（％） - 3.43×N（％）的值是（A）为（A）时，S <= 0.08x（Ti（％） - 3.43×N（％））负值，该值被视为零MIneq。= Mn（％） - 0.29 xSi（％）+ 6.24xC（％）...（B），950 <=（Mneq./(C(%)-(Si （％）/ 75）））黑土面积百分比（％）...（C），C（％）+（Si（％）/ 20）+（Mn（％）/ 18） > 0.30 ...（D）。

16. 发明授权

US09567658B2 Cold-rolled steel sheet 有权
标题翻译：冷轧钢板
公开(公告)号：US09567658B2
公开(公告)日：2017-02-14
申请号：US14118968
申请日：2012-05-24
申请人： Yuri Toda , Riki Okamoto , Nobuhiro Fujita , Kohichi Sano , Hiroshi Yoshida , Toshio Ogawa , Kunio Hayashi , Kazuaki Nakano
发明人： Yuri Toda , Riki Okamoto , Nobuhiro Fujita , Kohichi Sano , Hiroshi Yoshida , Toshio Ogawa , Kunio Hayashi , Kazuaki Nakano
IPC分类号： C22C38/02 , C22C38/04 , C22C38/06 , C21D8/02 , C22C38/38 , C21D9/46 , C22C38/00 , C22C38/08 , C22C38/10 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/60 , C22C38/22 , C22C38/28 , C22C38/32
CPC分类号： C22C38/38 , C21D8/005 , C21D8/02 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0273 , C21D8/0278 , C21D9/46 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/10 , C22C38/105 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/22 , C22C38/28 , C22C38/32 , C22C38/60 , Y10T428/12799
摘要： A cold-rolled steel sheet satisfies that an average pole density of an orientation group of {100} to {223} is 1.0 to 5.0, a pole density of a crystal orientation {332} is 1.0 to 4.0, a Lankford-value rC in a direction perpendicular to a rolling direction is 0.70 to 1.50, and a Lankford-value r30 in a direction making an angle of 30° with the rolling direction is 0.70 to 1.50. Moreover, the cold-rolled steel sheet includes, as a metallographic structure, by area %, a ferrite and a bainite of 30% to 99% in total and a martensite of 1% to 70%.
摘要翻译：冷轧钢板满足{100} <011>〜{223} <110>的取向基团的平均极密度为1.0〜5.0，晶体取向{332} <113的极点密度为1.0 至4.0时，与轧制方向垂直的方向的兰克福特值rC为0.70〜1.50，轧制方向成为30°的方向的兰克福特值r30为0.70〜1.50。另外，作为金相结构，冷轧钢板以面积％计，总计为30％〜99％的铁素体和贝氏体为1％〜70％的马氏体。

17. 发明授权

US09546413B2 Hot-rolled steel sheet and production method thereof 有权
标题翻译：热轧钢板及其制造方法
公开(公告)号：US09546413B2
公开(公告)日：2017-01-17
申请号：US14007583
申请日：2012-03-28
申请人： Takayuki Nozaki , Manabu Takahashi , Nobuhiro Fujita , Hiroshi Yoshida , Shinichiro Watanabe , Takeshi Yamamoto , Chisato Wakabayashi , Riki Okamoto , Kohichi Sano
发明人： Takayuki Nozaki , Manabu Takahashi , Nobuhiro Fujita , Hiroshi Yoshida , Shinichiro Watanabe , Takeshi Yamamoto , Chisato Wakabayashi , Riki Okamoto , Kohichi Sano
IPC分类号： C22C38/26 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/08 , C22C38/10 , C22C38/16 , C22C38/28 , C22C38/34 , C22C38/38 , C21D9/46 , B32B15/01 , C22C38/60 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40 , C21D8/04
CPC分类号： C22C38/26 , B32B15/013 , C21D8/0226 , C21D8/0263 , C21D8/0463 , C21D9/46 , C21D2201/05 , C21D2211/002 , C21D2211/005 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/10 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/28 , C22C38/34 , C22C38/38 , C22C38/60 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40
摘要： Disclosed is a hot-rolled steel sheet including, by mass %, C:0.02% to 0.5% of C, and the sum of the content of Si and the content of Al is 1.0% to 4.0%. An average pole density of an orientation group from {100} to {223} is 1.0 to 6.5, and a pole density of a crystal orientation {332} is 1.0 to 5.0. A microstructure includes, by of an area ratio, 2% to 30% of retained austenite, 20% to 50% of ferrite, and 10% to 60% of bainite. rC that is a Lankford value in a direction orthogonal to a rolling direction is 0.70 to 1.10, and r30 that is a Lankford value in a direction forming an angle of 30° with the rolling direction is 0.70 to 1.10.
摘要翻译：公开了以质量％计，C：0.02〜0.5％的C，Si的含量和Al的含量之和为1.0〜4.0％的热轧钢板。 {100} <011>至{223} <110>的取向基团的平均极密度为1.0〜6.5，晶体取向{332} <113>的极点密度为1.0〜5.0。微观结构包括通过面积比为2％至30％的残余奥氏体，20％至50％的铁素体和10％至60％的贝氏体。在与轧制方向正交的方向上的兰克福德值的rC为0.70〜1.10，在与轧制方向成30°角的方向上的兰克福德值为r = 0.70〜1.10。

18. 发明申请

US20140027022A1 HOT-ROLLED STEEL SHEET FOR GAS NITROCARBURIZING AND MANUFACTURING METHOD THEREOF 有权
标题翻译：用于气体氮化的热轧钢板及其制造方法
公开(公告)号：US20140027022A1
公开(公告)日：2014-01-30
申请号：US14110551
申请日：2012-04-13
申请人： Tatsuo Yokoi , Hiroshi Shuto , Riki Okamoto , Nobuhiro Fujita , Kazuaki Nakano , Takeshi Yamamoto
发明人： Tatsuo Yokoi , Hiroshi Shuto , Riki Okamoto , Nobuhiro Fujita , Kazuaki Nakano , Takeshi Yamamoto
IPC分类号： C21D8/02 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C22C38/38 , C22C38/34 , C22C38/32 , C22C38/26 , C22C38/24 , C22C38/22 , C22C38/16 , C22C38/12 , C22C38/08 , C22C38/14
CPC分类号： C21D9/46 , C21D8/0226 , C21D8/0263 , C21D2211/005 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/105 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/36 , C22C38/38
摘要： In a hot-rolled steel sheet, an average pole density of an orientation group of {100} to {223} , which is represented by an arithmetic average of pole density of each orientation of {100} , {116} , {114} , {112} , and {223} in a center portion of a sheet thickness which is a range of the sheet thickness of ⅝ to ⅜ from a surface of the steel sheet, is 1.0 or more and 4.0 or less, the pole density of a crystal orientation of {332} is 1.0 or more and 4.8 or less, an average grain size in a center in the sheet thickness is 10 μM or less, and a microstructure includes, by a structural fraction, pearlite more than 6% and ferrite in the balance.
摘要翻译：在热轧钢板中，{100} <011>〜{223} <110>的取向基团的平均极密度由{100} <011的各取向的极点密度的算术平均值在片材厚度的中心部分中的厚度为5/8的片材厚度的范围，> 116，<110>，{116} <110>，{114} <110>，{112} <110>和{223} 至3/8以下，为1.0以上且4.0以下，{332} <113>的结晶取向的极点密度为1.0以上且4.8以下，平均粒径为中心的片材厚度为10μm以下，通过结构部分，微结构包含大于6％的珠光体和余量的铁素体。

19. 发明申请

US20140014236A1 HOT-ROLLED STEEL SHEET AND PRODUCTION METHOD THEREOF 有权
标题翻译：热轧钢板及其生产方法
公开(公告)号：US20140014236A1
公开(公告)日：2014-01-16
申请号：US14007583
申请日：2012-03-28
申请人： Takayuki Nozaki , Manabu Takahashi , Nobuhiro Fujita , Hiroshi Yoshida , Shinichiro Watanabe , Takeshi Yamamoto , Chisato Wakabayashi , Riki Okamoto , Kohichi Sano
发明人： Takayuki Nozaki , Manabu Takahashi , Nobuhiro Fujita , Hiroshi Yoshida , Shinichiro Watanabe , Takeshi Yamamoto , Chisato Wakabayashi , Riki Okamoto , Kohichi Sano
IPC分类号： C21D8/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/00 , C22C38/10 , C22C38/12 , C22C38/34 , C22C38/38 , C22C38/02 , C22C38/08
CPC分类号： C22C38/26 , B32B15/013 , C21D8/0226 , C21D8/0263 , C21D8/0463 , C21D9/46 , C21D2201/05 , C21D2211/002 , C21D2211/005 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/10 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/28 , C22C38/34 , C22C38/38 , C22C38/60 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40
摘要： Disclosed is a hot-rolled steel sheet including, by mass %, C:0.02% to 0.5% of C, and the sum of the content of Si and the content of Al is 1.0% to 4.0%. An average pole density of an orientation group from {100} to {223} is 1.0 to 6.5, and a pole density of a crystal orientation {332} is 1.0 to 5.0. A microstructure includes, by of an area ratio, 2% to 30% of retained austenite, 20% to 50% of ferrite, and 10% to 60% of bainite. rC that is a Lankford value in a direction orthogonal to a rolling direction is 0.70 to 1.10, and r30 that is a Lankford value in a direction forming an angle of 30° with the rolling direction is 0.70 to 1.10.
摘要翻译：公开了以质量％计，C：0.02〜0.5％的C，Si的含量和Al的含量之和为1.0〜4.0％的热轧钢板。 {100} <011>至{223} <110>的取向基团的平均极密度为1.0〜6.5，晶体取向{332} <113>的极点密度为1.0〜5.0。微观结构包括通过面积比为2％至30％的残留奥氏体，20％至50％的铁素体和10％至60％的贝氏体。在与轧制方向正交的方向上的兰克福德值的rC为0.70〜1.10，在与轧制方向成30°角的方向上的兰克福德值为r = 0.70〜1.10。

20. 发明申请

US20130323112A1 HOT-ROLLED STEEL SHEET AND METHOD OF PRODUCING THE SAME 有权
标题翻译：热轧钢板及其制造方法
公开(公告)号：US20130323112A1
公开(公告)日：2013-12-05
申请号：US14000143
申请日：2012-03-05
申请人： Riki Okamoto , Nobuhiro Fujita , Manabu Takahashi , Kunio Hayashi , Tetsuo Kishimoto , Kazuaki Nakano , Takeshi Yamamoto
发明人： Riki Okamoto , Nobuhiro Fujita , Manabu Takahashi , Kunio Hayashi , Tetsuo Kishimoto , Kazuaki Nakano , Takeshi Yamamoto
IPC分类号： C22C38/38 , C22C38/02 , C22C38/04 , C22C38/06 , B21B1/26 , C22C38/12 , C22C38/34 , C22C38/16 , C22C38/10 , C22C38/08 , C22C38/00 , C22C38/14
CPC分类号： C22C38/38 , B21B1/26 , C21D6/005 , C21D6/008 , C21D8/0226 , C21D8/0263 , C21D9/46 , C21D2211/005 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/10 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/34
摘要： In a hot-rolled sheet, an average value of pole densities of an orientation group {100} to {223} , which is represented by an arithmetic mean of pole densities of orientations {100} , {116} , {114} , {112} , and {223} in a thickness center portion of a thickness range of ⅝ to ⅜ from a surface of the steel sheet, is 1.0 to 6.5 and a pole density of a crystal orientation {332} is 1.0 to 5.0; and a Lankford value rC in a direction perpendicular to a rolling direction is 0.70 to 1.10 and a Lankford value r30 in a direction that forms 30° with respect to the rolling direction is 0.70 to 1.10.
摘要翻译：在热轧板中，取向组{100} <011>至{223} <110>的极点密度的平均值由取向{100} <011>的极点密度的算术平均值表示，在厚度中心部分的厚度范围为5/8至3/8的{116} <110>，{114} <110>，{112} <110>和{223} <110> 钢板为1.0〜6.5，晶体取向{332} <113>的极点密度为1.0〜5.0，在与轧制方向垂直的方向上的兰克福德值rC为0.70〜1.10，相对于轧制方向形成30°的方向的兰克福德值r30为0.70〜1.10。

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